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Contaminated Desires Ch 01

Contaminated Desires Ch 01

by hugobozz
19 min read
4.25 (20000 views)
adultfiction
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My sister--two years older than me--and I both struggled to find an affordable place of our own. The housing market for first-time buyers? Completely shot to hell. For the past 15 years, house prices have skyrocketed, interest rates are through the roof, and mortgage requirements are insanely strict. And that's assuming you can even find an affordable house, because those attract more buyers than honey attracts flies. It's absolutely bonkers.

Strangely enough, things were way better in the higher price ranges, where people looking to upgrade had an advantage--especially if they had a low mortgage rate they could transfer over, a house with high resale value, and declining prices in certain areas. With both of us still living at home, Mom and Dad decided to take the leap and buy a bigger house--one that gave my sister and me more privacy and flexibility.

My sister was ecstatic because the house came with a backyard pool. It was the beginning of March, but the idea just made her all excited. I, on the other hand, was thrilled about the basement. You see, I'm a bit of a chemistry nerd. I work at a chemistry company, but they don't give me much hands-on lab work, so I wanted to do my own experiments. Mom and Dad gave me a dedicated space in the basement where I could set up my chemistry gear--as long as I wasn't doing anything too risky, explosive, or otherwise life-threatening.

I had what I thought was a brilliant idea: a fat-burning compound designed for transdermal absorption. Just rub it onto your skin, and it would ramp up fat burning in that specific area. If it worked, it would be like targeted weight loss--something diet and exercise alone couldn't do.

So, I started developing a topical formula that would increase thermogenesis (body heat production) to accelerate fat burning. I needed skin-permeable compounds to ensure proper absorption and ingredients that could stimulate metabolism and fat breakdown. My formula included:

• Capsaicin extracts (from chili peppers) to boost heat production,

• Methylxanthines (like caffeine and theobromine) to stimulate fat metabolism,

• L-carnitine esters to help transport fatty acids for energy,

• Transdermal carriers like ethanol and dimethyl sulfoxide (DMSO) to enhance absorption,

• Plant extracts (such as maca root, muira puama, and ginger) to further boost metabolism.

• Propylene Glycol to keep the substance "stable" and prevent the ethanol from evaporating

• Some thickening agents like carbomer, xanthan gum and lecithin to give it a gel-like or creamy substance

Later, I added aloe vera and glycerin to soothe the skin and prevent excessive dryness or evaporation.

Of course, working from home meant I didn't have access to proper lab disposal systems. Besides, all the ingredients were safe on their own, and I wasn't exactly cooking up TNT down here. At worst, it wouldn't work--but hey, that's science. A little rinse down the drain, and everything would be fine. It's just natural or water dissolvable ingredients, after all...

The first few attempts were... let's just say, inconsistent. Some batches barely did anything, while others made the skin feel like it was on fire. Not in a good way.

I tested it on myself at first, applying a thin layer to my stomach, arms, even my thighs--anywhere fat tends to stick around. Sometimes I felt a bit of warmth, other times nothing at all. No miracle six-pack overnight, but after a few tweaks, I did notice something: a faint, lingering heat that seemed to last longer with each new batch.

Encouraged, I roped in a few colleagues and friends. The results? Mixed, but promising. A couple of them swore they felt a warming effect that wasn't just placebo, while another said his skin looked tighter after using it for a few days. One guy even claimed he lost a centimeter around his waist--not dramatic, but measurable. On the flip side, some testers just ended up with irritated skin. One poor guy complained about an unbearable burning sensation after applying it post-shaving. (Oops! But how was I supposed to know he shaves his chest?)

Still, this was progress. The effects weren't earth-shattering, but they were real. It wasn't just wishful thinking. With every tweak, I inched closer to something that actually worked--just not quite as I intended.

It was now early June, and finally, the weather was warm enough to actually use the pool. While my big sister and parents were frequenting the pool almost daily, I was still holed up in my basement, obsessing over my fat-burning lotion--or gel, or whatever substance it was turning into. I'd been at it for the past three months, working on it in my spare time outside of work, and while I wouldn't exactly call it a breakthrough, the progress was enough to keep me going. Sure, I'd lost a few magnetic stirring rods along the way--what I'd jokingly called "casualties of war" after they probably ended up in the trash--but I hadn't given it much thought. I was too focused on perfecting my formula.

I'd noticed that, as the weather warmed up, people seemed... friendlier? My sister, who was usually a bit lazy about chores and often got an earful from mom, was more cooperative than usual. Not that she did her chores now, just...no frustrating discussions or comments. Mom and dad, too, seemed to be getting along better--less arguing, less tension. It was like the sunshine had put everyone in a better mood. Or maybe it was just the fact that we had a pool now. Who knew? Whatever it was, it made the house feel a lot more relaxed.

We'd dress more "summerly". Sweaters were stored in cabinets, pants became shorts, shirts became tops. My sister was -- as was to be expected -- dressed the skimpiest. I guess that a girl in her early twenties is expected to worry about those things. Had it changed from last summer? Maybe, but I couldn't recall. I didn't think she went shopping for new clothes a lot, at least. One thing for sure, I had never registered that my sister often didn't wear a bra on such warm days. Was that a change in her, or did I just start to imagine these things? Were it my young-adult hormones acting up which caused me to....see this?

A couple of days later I was walking towards my basement. I stopped in the kitchen for a drink and looked outside. My sister -- dressed in a skirt and top -- leaned forward and pushed her skirt down in a slow and seductive way. When the little fabric was around her ankles, she stepped out of it, bent forward again and picked up the little piece of cloth. She then stretched, and in a slow but smooth motion, she pulled the top right over her head. She was wearing her bikini, but in my mind, this looked so....seductive. Why the hell was I making this sexual in my mind?!

Another time -- shortly after -- she had one of those water mist spray bottles to help her cool down. She sprayed the watery bubbles on her face and on her chest, but in the sunny light, it glistened beautifully. I just stared at her tits for a moment as they glistened, before snapping out of it. Why was I doing this?!

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On an even hotter day, instead of the spray mist, she used ice cubes. Mainly she was running them over her cheeks, forehead and neck, but also a little bit on the swell of her breasts. She saw me looking at her even, just smiled, and continued. Again, why in the world was I perverting over my sister? She was just trying to cool down a bit in the blazing sun!

A few days after, I came home a little early. I found her in her room for a change. She was a bit daydreaming while sitting in front of a ventilator, a fan, which was on full speed. She had it aimed at her chest and neck, while at the same time pulling on her shirt to make sure the air would make it in. I knocked on her open door, then walked in. "Whatcha doing?" I asked. She continued to air her shirt like that, and with each pull I could see deep down her cleavage. It was very obvious she was again braless. "I've been feeling so hot lately..." she sighed, "just trying to cool down a bit."

I almost blurted out "Yeah, you look hot too" but held back just in time. "Yeah, it's hot outside too..." She looked at me for a moment that that's not what she meant, then just nodded, and I left her alone.

Later that day, in the afternoon, I found her again in the garden. She was carrying a dripping watering can. She wasn't the type to water the plants, so I stopped in my tracks and observed what was happening. She pushed the watering can up high, tilted it, and stood underneath the cold sprays of water. "What on earth...." I said while approaching her. "Oh, this is embarrassing" she giggled. "I've just....been feeling so hot lately."

"Well, it is hot, blazing hot..." I replied.

"No, this is different. It's like...the heat is coming from within me. And I'm....easily distracted."

"Because of the heat...?"

"Yes...no... Let's not get into that... Just know, I'm hot...." She giggled like a little school girl as she said it. She was clearly not telling me everything, but I also knew that she didn't want to talk about it. She always giggled like that if she was embarrassed and didn't want to discuss something deeper.

That coming Sunday, mom and dad would go to grandma for the day. We had agreed to have an early breakfast together, but my sister wasn't up yet. Mom asked me to go and take a look. I knocked on her door and she was still sleeping, a thin blanket covering her body. I tapped her shoulder and woke her up. She looked at me with sleepy eyes...

"Rise and shine, it's breakfast time" I smiled.

She rubbed her eyes, pushed her blanket away and stood up. She was wearing a black thong and some thin cotton shirt. Her nipples were hard, and pushing against the fabric. She just reached for some booty shorts, put them on, then stepped into her flip flops. "Let's go..."

I was surprised to see her walk down to the breakfast table like that. Not that I didn't appreciate it. After all, she was sitting directly opposite of me.... Even more surprising, mom and dad didn't bat an eye at it.

All in all, in hindsight, these should have been red flag warning signs. But at the time I didn't think much more of it. I mean: the hot weather, people were happy - not just at home but everywhere, had settled into a new house with a pool, and maybe I was seeing things. Plus, if you're on top of it, it did see more like an evolution of things. That was until one afternoon when I went to grab a drink and peeked out the window to see what was going on. My parents were by the pool, laughing together in the sun. Dad was holding mom's hand in a way that felt... different. Flirty, even. And mom? She was giggling like a teenager, brushing her hair behind her ear with this look on her face that was almost... well, seductive.

I watched for a moment, confused. Something wasn't adding up. Was it the pool? Was it the sun? Had I missed some new trend about how weather made everyone more... well, friendly? Then my dad made a move that made me freeze. He leaned in like he was going to kiss mom right there on the edge of the pool. I quickly looked away, not interested in seeing that public display of affection, but it did get my mind going. They were acting way too happy. Like, "This is not normal for our family" happy.

In the days that followed, I observed my family more intense and more often, and the... well, flirty behavior of my parents didn't stop. If anything, it became even more obvious. Mom could be cooking dinner in the kitchen, and dad would lean in, kiss her neck, and sometimes squeeze her butt. And mom? She didn't seem to mind. In fact, she would smile, lean into it, and even press her hips back against him.

My sister, on the other hand, was a bit of a mess. She was still super friendly, always smiling, dressing for the warm weather, but she was also oddly snappy and irritable. She couldn't seem to decide if she was too happy or too frustrated. None of it made sense!

At some point, my sister's outfits started to feel... different. The shorts got shorter, the tops got tighter, and her neckline dipped lower and lower until I found myself constantly fighting the urge to glance away--or worse, stare. Or was it I who had changed? That I started to notice my family's behavior in a different way? Were it my own hormones playing tricks with me which caused me to gawk at my sister? After all, I was the one who struggled to keep my eyes off of her round butt and deep cleavage. Down boy! And at the same time, of course she would dress in skimpier outfits; summer was coming and the weather was getting so nice.

She didn't just dress like that when she was heading out with friends. No, she walked around the house like that. Skimpy tank tops without a bra, loose off-the-shoulder shirts that conveniently slipped down her arm, and skirts so short that I found myself second-guessing whether she was even wearing anything underneath. She moved around with this effortless confidence, completely unbothered by how much skin she was showing. I didn't recall her dressed like this in other years, but maybe I just hadn't registered?

The strangest part? Mom and Dad didn't seem to care, which added to my confusion of this being "different". If anything, they seemed to appreciate it. I caught my dad looking more than once, though he never said anything. Mom would even compliment her--saying things like, "That dress looks great on you," or, "You have such a nice figure, you should show it off more." I kept waiting for someone to tell her to cover up, for Dad to give her that fatherly glare, or for Mom to insist she was dressed inappropriately. But it never happened.

Instead, it was like they encouraged it. Like they liked seeing her like this.

And I? I hated to admit it, but I was noticing too. And I wasn't supposed to.

It had been a few days of relentless heat. The kind of oppressive heat that made it impossible to think straight. My basement lab was unbearable, with no air conditioning and the chemical fumes lingering in the thick, hot air. It was like trying to breathe through a wet blanket. Every time I tried to mix another batch of my fat-burning concoction, the sweat would pour down my face and drip into the beakers. I couldn't focus, and I was getting frustrated. Maybe I needed a break.

So, I decided to join my family by the pool. The water was cool, the air not nearly as humid and the sun felt great after spending hours in the stifling basement. I still had that nagging feeling that I needed to get back to my experiments, but today, I couldn't deny it: the pool was calling me. Besides, I hadn't spent enough time just chilling. It seemed like a good opportunity to relax.

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The afternoon sun hung high in the sky, baking the backyard in a golden glow. The heat was just killing without any form of cooling, the kind that made the pool's cool water almost a necessity rather than a luxury. As I settled into a lounge chair near the pool, my sister had claimed the inflatable raft, lazily floating across the shimmering surface, her body stretched out, soaking up the warmth. Her hair was tied up in a messy bun, a few loose strands sticking to her skin from the humidity.

She'd been dressing lighter over the past few weeks--shorter shorts, looser tops--but her choice of swimwear today caught my attention more than usual. The bikini she wore was... minimal. Some would call it inappropriate for the audience, and definitely pushing the line of what I was used to seeing her in. The way it clung to her left little to the imagination, and I found myself struggling not to notice.

She shifted slightly, adjusting her position, one leg stretching out lazily while the other dipped into the water. It wasn't much, just a casual movement, but something about the way she did it felt different. More deliberate, maybe. Or maybe I was just imagining things.

"God, it's hot," she murmured, letting one arm dangle off the side of the raft, fingertips trailing through the water. She tilted her head back, eyes closed, a small, satisfied smile on her lips.

I swallowed, trying to focus on literally anything else. The clear blue water. The gentle ripples lapping against the pool's edge. The sound of a distant lawnmower humming from a neighbor's yard.

But then she peeked one eye open and caught me looking. Her smile widened just a little. Not teasing, not obvious--just... aware.

I quickly looked away.

We hadn't talked much lately--she'd been too busy with her own thing, and I was absorbed in my fat-burning potion experiments. But today, something was different. She kept glancing over at me, her eyes lingering a little longer than usual. I shifted uncomfortably on the chair, trying to ignore the way she seemed to inch closer without actually moving.

"Hey, you okay?" she called out, her voice suddenly sweet and... too friendly.

"Yeah, just hot," I mumbled, not really meeting her gaze.

But then she was beside me, leaning over the side of the pool, her hand resting on my leg just a little longer than necessary. My heart skipped, and I quickly pulled away, but she didn't seem to notice--or maybe she did. Her fingers lingered before sliding off, and she gave me this look, the kind of look I couldn't place. Something... too confident, too eager.

"What's up with you?" I asked, trying to keep my tone light, but I could feel the tension building in my chest.

She shrugged, a coy smile playing on her lips. "Just enjoying the sunshine. You should relax more, you know?"

With the way her hand had touched my leg, I was far from relaxed.

Before I could say anything, I heard a loud clunk, like metal hitting metal. It was followed by a few more clanking noises. I froze, feeling my pulse quicken--not from my sister's touch, but from the sound coming from the pool's filtration system. It was a weird noise, almost like something was stuck inside.

"Did you hear that?" I asked, already standing up to investigate.

My sister didn't seem as alarmed. "Yeah, it's been doing that on and off since we got the pool. I think it's just the pipes or something. Maybe it's the filter?"

I frowned, still uneasy. The noise kept coming in short bursts, like something was grinding against something else. I made my way toward the pool's equipment area, and my sister just shrugged a bit disappointed, going back to floating around on her raft.

When I opened up the filter box, the first thing I noticed was a few metal objects wedged inside the mesh filter. My eyes narrowed. It looked like... stirring rods. My stirring rods. The ones I'd thought I lost.

A slow, dawning realization hit me, and the pieces clicked together with an unsettling finality. I stood there, stunned for a moment. My stirring rods had somehow ended up in the pool's filtration system. I hadn't even realized that my discarded "casualties of war" had actually been flushed down the sink--or somewhere.

And that's when the Aha! moment hit me, as I pulled out the metal rods, glistening with a strange residue that was all over the filter as well.

I wasn't just dealing with a couple of lost items. The fact that these rods had been in the pool's filtration system for days meant that--

"Oh, no," I whispered to myself. This was bad. This was really, really bad.

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