Not pigs, but cigarettes (Score 3, Interesting)

Twenty some odd years ago, one of my sons left the door to our freezer open. The freezer was located in the basement and the felony was not discovered until after a week had passed. Poultry, fish, pork and beef along with assorted vegetables were the main products in the decaying mass that was removed.

I tried:
Washing with soap
Washing with TSP (20 years ago it was the real stuff
Baking Soda in small containers on all shelves
Charcoal ( Charcoal Briquets broken into small chunks and scattered on the shelves

Then as I was bemoaning the fact that I would have to purchase a new freezer, a Salesperson in the local Montgomery Ward Store said "Newspaper", (She lost the sale but gained my everlasting adoration); it absorbs the odor. Wad it up, but not tightly, fill the freezer, and change it every few days.

Within a week to 10 days, the odor was gone. The stupid freezer is still in operation, probably keeping my electric bill higher than it needs to be.
But, it is odor free!

Newsprint may have changed in the past 20 years, but it worked once (for me).

Ozium is a commercial air freshner, odor killer. It has worked in cigarette/cigar smoke impregnated rooms with limited success for me recently (Real Estate Sales).

Good Luck!