Freezer Smells?

Hello, I have one corn snake buddy and store his mice in my home freezer. I notice that the bag of frozen mice gets kind of strong smelling, especially toward the end of a batch. I can smell it on the packaging of my frozen people-food.
It's unappetizing.
Do any of you have this happen? Is there some way to wrap the mice to contain the odor? Right now they are wrapped with three layers, heavy plastic bags.
Or, maybe there is some very tiny freezer that I could get for Congo's food only. But my space is very limited.

Frozen rodents sealed properly should not have an odor. For myself, years ago, I purchased a 3’x3’ freezer that I store all my mice in. My wife appreciated the purchased!

Hello, Thank you!
I will check to see if the mice are sealed up well enough.
(And might look to see if tiny freezers exist)

I double bag using ziplocks that are rated for freezer use and have stored mice for well over a year with no issues , and I also use a tiny freezer I purchased for less than $200.

Thank you! Don't know why I didn't think of Ziplock bags...I even have some.
Will check out tiny freezers.