skipro3 wrote:
Take baking soda and hydrogen peroxide and mix together. It will foam like crazy so you gotta work fast. Apply to all surfaces and work in well. After the foaming stops, wipe clean.
The mixing causes oxygen atoms to be released. The oxygen is short an electron in it's valence shell and will bond to the stink odor sources on the fridge surface. This will change the molecular structure of the stink source, essentially 'rusting' it with the oxygen and the new molecule won't have an odor.
At least, that's the theory.
We use this combo plus a bit of Dawn dish soap to get skunk smell out of clothing. I would have to think that if could get rid of that odor, the smell in a freezer would be a snap.