ranch dressing or flavor - not only do I hate the flavor, but I think it is part of the downfall of American society into obesity. Ever notice how many fat people need ranch to dip ALL their food into. I guess french fries, motzerella sticks, pizza and everything else don't have enough calories, gotta dip them in ranch too. Most ranch dressing has MSG in it too which can give me a headache

ketchup - I like tomatoes - just not the syrup sweet ickyness of ketchup

most sweet relish or bread and butter pickles - the sweet flavor is just not quite right to me

some other things, like many beans, aren't really my favorites but I don't dislike the flavor enough to not eat or try them. I won't eat food with ranch, ketchup or sweet relish. I have a close friend that has a baked bean recipe that people rave about. It actually has 3 cups of ranch in it AND sweet relish - really really disgusting.