I used to think that maybe there was something wrong with me, but I see from this site I'm not alone in doing this type of thing.
My older sister is a few years older than me and as a horny teenager, I loved going through her underwear drawer and laundry. I just wanted to see what girl's panties were like. When I was 15 she got a new boyfriend. Suddenly as I went through her drawers I noticed her underwear was getting a lot sexier. She went from cotton panties to wearing thongs and panties made of much softer silky materials. From going through the laundry, I noticed she still wore the cotton ones during the week, but that after her dates on Friday or Saturday nights, the hamper would then have these sexier items.
At this age I had still never been with a girl but was always so horny and desperate to know what a woman felt like to touch. The closest thing I had was my sister's panties. One weekend afternoon, while I was in the laundry room feeling her panties I noticed the crotch area was a little damp. I decided to take a whiff, to make sure it wasn't pee. The smell was intoxicating to me. As I enhaled her aromas my cock got harder than it ever had before. I started rifling through the hamper to pull out more of her panties to sniff.
I then realized that for some reason, the cotton ones never had as strong a scent as the sexy panties she wore on dates. I now know it was beacuse she was a lot wetter on her dates and they were probably engaging in some sexual activity. As an inexperienced horny teenager, all I new is that these panties made me a lot harder and hornier.
Thus began my weekly tradition. I couldn't wait for my sister to go on a date. The next day when I had the chance I would run down to the laundry room to pull the previous night's pair out. I'd feel the soft fabric and then put them to my face and breathe in my sister's scent. As my cock hardened, I would drop my pants and begin to stroke it while taking it all in. Sometimes, with really soft pairs, I'd wrap them around my shaft while sniffing another pair. I'd pump my cock until I came and then clean up and put her panties away.
This went on for a couple of years, until she married the guy and moved out and unfortunately it had to end.