You need a real brain teazer

[tiger84]

Two men are in a cabin in the woods in the middle of nowhere. Both of them are dead. They are both innocent of homicide, they did not commit suicide, and they did not die of natural causes, disease, or other bodily malfunction. There is snow on the ground, and there are no foot prints in the snow, which rules out being killed by animals or other humans. How did they die?