Mother-in-law’s used sweaty pantyhose!
My mother-in-law used to wash her pantyhose by hand and hang them in their shower. I used to stay the weekend, and would shower there. I used to jerk off into the foot of one of the clean suntan pantyhose. After a few weeks, she began to hang unwashed pairs in the shower stall. The scent of her well worn pantyhose was too much to resist, and for the next two years, I would inhale her scent while jerking off into the other foot of the nylons. She had to know what I was doing, and she let me use her pantyhose for my fetish. I never told her how much I appreciated her kindness!