if you put a dead animal in the freezer, wrapped in a plastic bag, lay the dead animal on top of the other food in the freezer, can the smell of the dead animal contaminate the other food in the freezer just from the odor? please help me!
Anything you store in the freezer needs to be airtight, or odors will propagate. And they'll linger in the freezer itself, not just the other food, so you really want to avoid this.
If you're using plastic bags to store things in your freezer (and they're not zip-seal bags), make sure they're thick and tied off airtight. No harm using multiple bags to make extra sure!