Can’t believe I forgot to mention vinegar. Especially *malt *vinegar. Totally ruins my meal if someone around me uses it.
Damn, and I love putting malt vinegar on French fries.
I hate vanilla with a passion. Coffee second.
Other than that…tonsiliths? Most smells don’t bother me.
Rancid beer
Tooth decay
I’ve dealt with poop at home and professionally, and seriously, sewage isn’t that bad. Rotting garbage is actually much worse.
In the cleanup after hurricane Katrina, there was a special section in the hazardous waste area, far, far away from anything else and with I believe full supplied-air breathing equipment for the workers, just to clean out refrigerators (that had been sitting, full of food, basically air-tight, but without power to actually stay cool, in a near-tropical climate for weeks or months). I understand even ‘Dirty Jobs’ turned down an invitation to come participate in that.
Mendacity?
The decaying flesh of a still living rabbit mixed with the scent of stale urine and old matted feces with a dash of maggots thrown in.
I mentioned in the workplace rants thread in the Pit awhile back that there is a woman who walks past my desk on her way into and out of the office every day, and she must literally bathe in that stuff. There’s a lingering cloud of stink for a good five minutes after she walks by.
Cut grass after it’s been sitting in a bag for a couple of days.
Soiled baby diaper.
Chicken diaper - that absorbent pad in the bottom of a package of chicken, when I forget that it’s in the kitchen trash and don’t get it taken out to the dumpster for a few days.
Came to post this as it’s the obvious one by the name. So difficult to get past the smell to try it (which I did manage to do). Whenever I’m at a restaurant with it it ruins my appetite for anything else there.
I totally read that as vagina. I was like, wtf you need to get that poor thing to the gyno if it smells that bad.
Especially *malt *vagina! 
I have to pretend I’m blowing my nose to cover up my snorting.
I agree with this. I don’t like being near hard-boiled eggs because they reek so badly. Someone on this board described them as smelling like a fart that precedes stinky diarrhea.
I don’t know if this is the worst smell ever, but I also hate the smell of McDonald’s food. Especially when people bring it in the bus and I can’t escape the stink for the rest of the bus ride.
Rotted fish guts. Some say a fish rots from the head down. No. It’s from the gut out.
A single dead mouse spreads its stench over a surprisingly large area before its rotting is finished.