My attic is over the detached garage, so I’d choose person hands down.

I probably wouldn’t know for a really long time, because I don’t use that space (the ladder up there is duct-taped where it cracked at some point, and since I don’t use it, I’m not about to replace it) it stays decently warm up there so less concern about finding a frozen corpse, and if someone did croak in the garage, the smell wouldn’t permanently be in the house.

But roaches would find their way into the house.