We had good luck using a large bottle of hand sanitizer on one, 79. We did 1 small area at a time with rolls of paper towels, and gobs of sanitizer. Pour it on or slap it on an area real thick, give it a few seconds, wipe away and throw towel.
Once we had it down to barely detectable we made a paste of baking soda & water, applied it, washed and wiped the unit out. Let it stand open for another week. Think ol lady gave it one last wipe out with the orange stuff (hand cleaner) with citronella in it and freezer was 100% good to go.
Are you dead sure that when juices collected when thawing there is no hairline crack in the liner where crap coulda seeped underneath and be on cabinet? Good luck.