Mine was my girlfriend, now my wife, and her roommates had a freezer in the basement of there house during their colleges years. They had very little in the freezer except for some meat they bought from a local locker. Well this was in May right before school let out and their landlord erroneously had the power shut off to the tenants above them, well long story short it also cut the power to the freezer in the basement so when they were getting ready to move out about a month later. They decided to clean the freezer out, they had not been in the freezer for a long time. I was there helping them move and when I went to open the freezer, I about
and gagged and my eyes started watering. The most horrific odor ever!! I ended up wrapping fabric softner sheets around my face and put on rubber gloves to get rid of rancid stuff. To this day I think I can still seem to remember that smell.
I grew up on a farm and we had dead animals and such, but this was the worst smell ever!!