Depends a lot on how long the corpse had been there, and what state it's in. My local 25 m x 6 Lane pool, I'd get in it with someone who just had a heart attack. Fresh corpse but shot, I'd have to play it by ear. Some post-apocalyptic scenario where the filtration system and everything has been offline for months and the whole place has turned into John Doe broth... probably pass...I mean there'd have to be a pretty good reason and a way to rinse off afterwards.