Alright you guys. I'm having this problem in my yoga class. There is this Ashtanga class that I really love every week, but there's this guy who apparently loves it too. He practices with a rug because he gets really sweaty, and I swear, I don't think he's ever washed it in his life. It stinks like a combination of B.O., mildew, and sour milk. It doesn't matter where I am in the class (the room isn't very big) - I can ALWAYS smell his stink.

Any suggestions?