It wasn't easy but somehow I was able to clean out and dispose of everything. Cleaning with bleach, baking soda, ammonia and vinegar did nothing to rid my freezer of the horrible odor. We finally gave up and decided to just take it to the dump.
The very day our friend was due to come over and help load the freezer into the truck to go to the dump, my dear Aunt told me she knew a way to rid freezers of smells, use 'pure' vanilla. She said to take a large bottle of 'pure' vanilla and put it in a bowl and then put the bowl in the freezer and close the door. Leave the freezer closed without opening it for 3-4 days.
I was skeptical but figured why not. I had nothing more to lose. We canceled the dump run and purchased the largest bottle of pure vanilla we could find. Four days later, I opened up the freezer to find absolutely no smell lingering from the rotted meats or vegetables. Absolutely amazing. It was just as fresh as ever.
We lost a ton of meat and produce that day but we used the freezer for another 5 years.
Source: My dear Aunt
By Bayliner from Perry Hall, MD