Oh, the smell!
This person was renting an apartment in Washington Heights. His story didn’t involve bad neighbors or landlords but rather a terrible roommate. If you thought late rent payment was bad, you’ve never lived with a physically active roommate who doesn’t particularly care about personal hygiene!
To get the smell of a rotting corpse out of his apartment, the OP and another roommate had to leave their windows open all day, every day. They finally went about searching for the source of the smell, which turned out to be the bad roommate’s dirty sock. It’s not what you think! The guy was suffering from a fungal problem and had no intentions of seeking medical help.