What's the worst scent you've ever smelled?

[Doc]

A suicide bomber has a unique smell. Burnt blood, hair, and flesh mixed with the contents of his bowels and organs, urine, plus the smell of whatever explosive he used. I can sort of describe it as death, and burnt blood. You actually can taste the vaporized blood in the air, its an iron taste. The air is very thick and the smell hangs around you. It may not be the worst smell but its certainly unforgettable.