I was at a hostel in NYC earlier this year and this gorgeous british guy stayed in my room. He was straight sadly but we hung out for a bit and chatted.
Every morning though, he would go for a run and would occasionally leave out his sweaty clothes to dry on his bed before leaving for the day to sightsee. When everyone was out, I took a whiff of his underwear and instantly got hard by how amazing it smelled. The mix of sweat and a bit of piss got me completely intoxicated in his stench. I took them to the restroom and sniffed them as I jerked off quite a bit that morning. I even wore them for a bit before putting them back on his bed.
A part of me wishes I had taken them too but I didn't sadly.