Happened to my sister years ago...power went out when they were on vacation..when it came back on it tripped the breaker..they lost everything in their fridge and deep freezer...this was in the summer and when the opened the freezer the smell about knocked them out....had to get rid of the freezer because they could never get the smell out of it...
We used to have a beach house. One of the fridge/freezers died. My wife went for visit while I was working too many hours. Give the stench and the amount of maggots, it had to have been dead for a couple weeks. It was probably the only weekend I was glad I didn't go with her.
We didn't even consider trying to reuse it.