My parents have converted the upstairs of their house into two bed sits, I vist once a week to say hello and do any maintenance, a new guest had arrived and wanted a couple jobs done, the guest was not in, my parents asked if I could do the jobs, I went into the room and it was a mess, nothing washed up and clothes all over the floor.
Stepping over and around things on the floor I saw a pair of knickers, I couldn't resist, I picked them up and sniffed the crotch, while doing this the guest opened the door (busted) are they my knickers she said, then she started screaming you dirty pervert you sick fuck get out, I pleaded with her not to say anything to my parents, she just said get out.
Two days later my parents called saying the cupboard in the new guest room was faulty, when I had a look I couldn't see anything wrong, when I looked on the shelf their we're a pair of panties with a note saying "you have permission to sniff these ones" I left a note saying thank you, all day I was sniffing the crotch, massive turn on for me.
Next day another call, the cupboard door is still playing up, I rushed there! In the cupboard was another note, please return my knickers and show your appreciation, told my parents I need parts and will return tomorrow, I went home and cum in the crotch of her panties, then again later that night and again before I went to bed and first thing in the morning.
I was shocked when I arrived to see she was in her room, you got my knickers she said, I gave them to her and she said, my my you have been busy!
For the next four months until she got herself a boyfriend she would ask me to drive her places, help her do things in rerun for sniffing her knickers, over the four months I had collected 12 pairs of knickers, I never did get to fuck her but it was great fun.