Actually, I know for a fact that the management of the Y has talked to this guy a few times. When I went to file a complaint about the odor problem, I was told Stinky (as my work-out partner and I have nicknamed him) didn't provide any explanation or excuse for his odor. I do know the staff has talked to him a few times, and he's even had a few confrontations. The most recent was Monday; my work-out partner and I actually overheard a heated discussion going on between Stinky and a female employee of the Y. We couldn't catch details, but something was being said about him "disrupting" her class, and she was filing a complaint about him. Stinky was arguing in a rather loud voice, as well.
My work-out partner has suggested leaving deodorant by Stinky's water bottle while he's strolling around the gym, but I think this is a rather expensive alternative. Maybe talking to him about the issue might help, but I'm afraid that, given his personality, it would probably escalate into a heated, ugly battle of words. FYI, Stinky is not overweight in the least; rather, he's slim of build, not muscular, and looks to be in his forties. And he always comes to the gym alone.
I think if I'm in close quarters with this guy sometime, I WILL say something about his odor. But confrontation isn't something I really want. Filing complaints doesn't seem to do the trick, either. I rather liked the idea the first respondant had - me and several other rather buff guys dragging Stinky into the showers and scrubbing him down ourselves. Hahahha! Although I'm pretty sure he'd file some sort of lawsuit against us. Too bad the right to stink is more protected than others' rights to unpolluted air.