They were a black cotton bikini, full bottomed but with some yellowish-whitish dried discharge stains on the gusset. They had the same strong sweaty smell as the last pair and a little bit of extra smell that was hard to describe. It wasn't a gross smell either, just kind of strong.
Probably about the 4th or 5th pair of Margaret's knickers I found were a large blue cotton pair that had a large, coffee-coloured stain on the vagina panel, which I was shocked by yet quietly excited. Strangely they had no extra odour than other pairs, which surprised me.
After this experience, I found the courage to actually start running my tongue across Margaret's dirty crotch panels as well as sniffing them. The first pair I put my tongue to had no stain, which was good. I didn't know if I would get any taste and I had to also be careful because if I made the crotch panel really wet, Margaret might find out.
For this reason I couldn't really suck them as I wanted to.
The first pair I actually got some taste from was actually quite heavily stained. It was a white lace pair that had a heavy, damp rust-coloured stain right through the gusset. Whatever part of her cycle she was on, they had a heavily "musky" smell and I felt quite daring as I started to lick them. The heavy staining was too curious for me to resist as I wrapped my mouth around them after a couple of minutes. It was such a unique taste and I decided that it was worth running the risk so I basically sucked them for about 10 minutes, trying to get as much flavour in my mouth as possible. It was definitely a strong taste and I masturbated hard thinking of her private vaginal activity that had led to this disgusting mess. I thought of her adolescent male students and what they would think if they knew their teacher Miss Hodges was producing this inside her underpants as she taught them!
I also found a couple of pairs that still had the odd brown, curly pubic hair stuck in amongst the dried discharge which was hugely exciting.
Some odd pairs also had light brown stains from her anus and these were pairs that I found to be on a whole new level of excitement. Vaginal odour was always one thing but anal aroma was something else and discovered that I definitely wanted more of this!
A few times I came across what were clearly period stains and probably only twice did I come across pairs of Margaret's knickers that had the typical tell-tale "fishy" odour for which women's vaginas are well-known. By the time I smelled her "fish" for the first time, I was more advanced in my desires and this actually made me hungry for more, which I eventually experienced with other women later on.
Overall, my experience with Margaret's dirty underwear over a period of time, shaped me into the enthusiast that I have now become.