Yes, nitrogen will kill any living thing, but I wonder what effect it has on regular, sub-cellular enzymatic activity? If the enzyme needs oxygen to function or be regenerated it would stop working but there might be some "decomposer" enzymes that could keep going. Let me ask our resident biochemist about that.

I think a bigger problem would be from the lack of water vapor/humidity causing meats and fresh plant matter to dry out. Not a problem with grains and seeds as you can already buy nitrogen-packed packets of seeds for emergency gardens, but juicy stuff would probably suffer.

-Blast