Me, my gf and her sister live in a 2 bedroom apartment, sometimes, after work I got to the apartment first and the first thing I would do is to sniff my gf sister’s used panties in her room. Sometimes I sniff them so hard to the point of licking them. There is that one time she almost caught me when i forgot to lock the door and she just arrived in the aparmtment. Damn it gives me the rush!