The worst thing I've ever smelt was a fart bomb. They were these little plastic bags you pop and a terrible smell came out. They were like things pranksters buy (which whom were very annoying and hall of fame losers).
@R2D21999 You've smelled Cat poop? I have never smelled it before...
I guess the worst smell I've ever smelled is messed up tripe. The entire house smelled horribly for more than 4 hours because my grandfather left the tripe outside the fridge for 2 whole days.
Kimchi. My mom likes to make it and then store it in a jar in the back of the refrigerator, where it proceeds to pollute the rest of the food with its horrendous stench. If it's not put back in the refrigerator, the house will reek.
Spilled a little kimchi on your jeans? TOO BAD, THE SCENT WILL POLLUTE THE NEXT BATCH OF LAUNDRY AND YOU'LL SMELL LIKE A REJECT FROM THE KIMCHI FACTORY.
How about using a container the kimchi used to be in? NOPE! THE SMELL OF FERMENTED CHILI CABBAGE WILL LINGER IN THE CONTAINER FOR DAYS AND POISON YOUR CHOCOLATE CHIP COOKIES.
Then how do you get rid of the stench? PERFORM AN EXORCISM OR PRAY.
Don't get me wrong, I like to eat kimchi, but being able to taste it in the air when I'm trying to sleep is a little too much.
The worst time was when the bedsheets were being washed with a shirt that had got kimchi on it. I about suffocated in a kimchi cocoon and ended up sleeping on the floor.
I was once in the same room as a tin of Surströmming.
Wikipedia has this to say about Surströmming:
In 1981, a German landlord evicted a tenant without notice after the tenant spread surströmming brine in the apartment building's staircase. When the landlord was taken to court, the court ruled that the termination was justified when the landlord's party demonstrated their case by opening a can inside the courtroom. The court concluded that it "had convinced itself that the disgusting smell of the fish brine far exceeded the degree that fellow-tenants in the building could be expected to tolerate".