Don't ask me why. All I know is when I get a real strong whiff of cum I get rock hard.
When I was a kid my brother would come home from school with his friend and go in his room, lock the door and wouldn't let me come in. I'd listen at the door and hear them whispering and my brother asking his friend if he liked her boobs and would he like to suck them and would you like her to blow you and his friend would say ya, would you.
Then the music would start and I couldn't hear anything else. When he and his friend left I went in his room looking for the magazine. I found a rag on the side of his bed with a few magazines. When I picked up the rag it was wet and I got this strong smell of cum, I got intoxicated. Didn't care about looking at the magazines. The heavy strong musky smell of my brothers cum and his friends got me harder and hornier then ever. I just laid back on his bed and pulled out my cock started smelling and sucking his cum soaked rag jerking my cock.
I never came so hard like I did that day, and every day his friend came over, and after they left.