Me it's the smell of cat pee and babies dirty nappies. Guarranteed to get me barfing every single time.

I dont have kids so probably the baby poop would have the same effect on me. Car exhaust fumes make me quite ill and hot spicy food doesn't go down too well either.

If I see someone else vomit more than likely I'll follow suit. Kind of like when you push one domino into another lol. One starts, then everyone follows.

Peas ... horrible green little suckers they are. I have to pick them out of everything, or the mere thought of them slipping down my throat by accident makes me start dry retching.

A ripe piece of brie at work today had me heaving but a sure way to make me physically sick to the stomach, is to leave, even the tiniest piece of shell in an egg or egg based dish. Weird, but since you asked

Hospitals creep me out. Spent alot of time in one after a car crash and to this day the antiseptic smell makes me wanna puke.

Shows like Fear Factor where they have to eat fish eyes or something equally as sinister. Can't watch or I'll be hurling right along with them.

The smell of septic sewage systems and sushi.

Mates that butt out their cigarettes in my potplants.

Reality tv show lol

Oh and cleaning up dead insects after you've Morteined them, and dirty toilets eeww oh and freshly removed footy socks.

Cockroaches and bugs in general. Such a flammen big wuss lol.