[quote=MissCapnCrunch]
UNLESS, the corpse released a toxin or entrapment of some sort making him sick -gasp!-
[/quote]

That's pretty good. Let's go with that.

In heaven:
Man1: How did you guys died?
Man2: I died in battle when odds where 40000 to 1.
Man3: I died when I destroyed 10000 falling meteors.
Man1: I died after I defeated Demon Overlord.
Man4: I died after I investigated a corpse.