I would agree that rotting human tissue is the worst. My first one was the old cranky neighbor that finally someone felt they were missing after a week of not seeing them.
My second one was in med school, had a old crazy guy get gangrene in his crotch. They had to put him in the isolation room just for the smell. It took a 8 hour surgery to clean things up, he lost his scrotum, but got to keep his testicles they just tucked them up somewhere. We would smear the inside of the surgical masks with toothpaste, to drown out the smell.
