a bag of zucchinis so ancient they had turned to brown liquid

A few years ago I went overseas for a month and returned to have my kitchen smelling like a rotting corpse. Turns out the thermostat has bust pretty much the day after I left and the entire contents of my freezer had been rotting for 5 weeks (there had been a heatwave too)!! Meat, fish you name it. In the words of Kenny, it was a smell that could outlast religion.