Why do some guys like smelling stinky feet?

I read some postings here about someone’s boyfriend’s brother wanting to smell their girlfriend’s feet. I’m 21 and at college out of my home state, and I was in the exact same position as this other person who posted here, but with my roommate’s brother. He’s 15 and apparently just loves feet. The first time I visited her parent’s place, sure enough, he asked me if my feet were smelly and if he could smell them. My roommate warned me about this, and she kind of ped him off and told him not to bother me each time we visit. But when visiting my last trip my roommate thought it would be funny if I let him smell my feet, but wanted to me to make them super smelly first, hopefully to turn him off. I thought it funny, and it would be real easy to do as we both are on the basketball team, and my feet do get pretty smelly just after one game. It took about 4 days in my sneakers with same socks, but wow, after that the socks could have walked away on their own. So when we got to her parent’s place this time, he of course asks. My roommate told him to take my sneakers and socks off as I sat on her couch, with both of us waiting to see his reaction, thinking he would get up and run. He starts smelling my feet, and the odor was covering the room, and he loved this!! I let him smell my feet for about 20 minutes, and I could not believe how much he liked smelling my feet when they were so stinky. It was wild! At first it was weird, but then I found it really kind of hot, and liked keeping his face under my feet and the feeling of him sniffing in and out against my smelly feet. Anyone else had any guys ask about smelling your feet?