A burned and partially decomposed body .
Just a burned body is a smell you won't forget .
Not having it burned all the way up .and not found for a few days .
Not a smell you soon forget .

Human flesh burning.

I suppose that would be decomposing flesh. A lot of it and human unfortunately.

The wolf enclosure at the zoo was so bad I was retching. When I lived in Australia I worked at a transport company and one trucker used to drive for days in the heat and the smell of him was so bad we'd lock the door when his truck pulled up and check his paperwork in the open air.

Body odor, definitely. Working with teenagers has its downsides.

Broccoli that clogged the drain

Curry.

Whatever it was that died in the elevator shaft at school....

Probably when I had a dog when I was 10 and it pooed in the kitchen

Mold. But not just any mold, a very foul mold that was inside the walls of a building. I've never gagged over any other smell before.

Fish always smells awful to me.

Meat of rotten chicken

Two month old crabs forgotten in a basement fridge. Death itself wouldn't approach.

My friend Mickey's farts he definitely has a medical condition and he definitely has no manners 🤮

Another woman's underwear!

Body odor. Sometimes if it's really bad it makes me want to vomit.

Human flesh 🥵

Bullshit

LOL

A room filled with shit

Roadkill. Dead animals.

The conditions of one person’s home was the most foul smell