I have had this problem for some time now, and it has made me refrain from wearing sweat pants or basketball shorts. It smells quite butt-like or like sweat. Every time I stand up, you can smell the strange stench and see the mark. This usually happens when I stand up from sitting on rubber chairs, but it can happen while I stand up from any chair. This never happens when I'm wearing jeans or cotton shorts. Along with the strange butt-like stench, it leaves a sweat mark on the chair. Is there any way I can stop this, the sweat mark and the stench? Any possible answers would be greatly appreciated. Thank you for taking your time to help my personal issue.