Its not so much that I hate them, but onions ... *shudders* I'm allergic to them and they put them in EVERYTHING!! onion powder etc is in far too much stuff. However it has made me learn to make a lot of my own stuff, but also means I can't grab a quick bite - for example, the only 2 soups I have found to buy from the supermarket, are cream of tomato (icky horrible sweet nasty stuff it is) and mushroom, boring and the smell makes me nauseaus thanks to stoners making "mushroom" tea all the time in my building at uni
But I also hate peppers. Like if someone gets a pizza with pepper on, it makes me gag
Of, and coffee... I love the smell. At work they have a coffee percolator and the smell is delicious... the taste on the other hand