I'm not sure why, but my cat loves my smelly clothes. The smellier the better. Whenever I come home from playing basketball, I'll take off my sweaty clothes and socks and throw them on the floor somewhere. Inevitably my cat will find it and decide that he wants to make love to my sweaty smelly clothes. He will start rubbing around in them, especially his cheeks which cats typically use to mark things they consider to be theirs.
It is similar to how he acts around Cat Nip. Now I don't know if it is me specifically, or all smelly clothes, but I find it to be very interesting. Do my sweaty clothes have the same affect on my cat as catnip?