There are a number of things that I wish I could eat but can’t due to my digestive issues, but there are very few things that I don’t like.
The only things that come immediately to mind are cilantro (who wants to eat soap?) and egg drop soup (slimy snot soup).
I’m unusual in that I love liver. That’s a good thing because it’s high in iron (which I have a deficiency of) and other nutrients and I’m able to digest it.
Me! The only seafood I eat are fried clam strips, which a lot of people find odd because they have a strong taste. But they don’t have a classic fishy taste.
I also dislike beer, dark chocolate, coffee, and many green veggies because they all taste bitter. (why yes, I am a super taster.) And I dislike grape wines of any color because they uniformly taste moldy to me.
All fats are not equal. The buttery fat you get from a ribeye is MUCH tastier than the rubbery fat you get from a top round for example.
Truffles or truffle oil. Reminds me of something nasty from organic chem lab.
I can take (or oftne leave) much of the above, but one I haven’t seen mentioned is something I have never eaten in my 65 and a half trips around the sun.
Pizza.
Just don’t like tomato sauce or for that matter, everything else that goes with pizza, and have managed well without it all these years, so…no pizza.
Foods I hate:
Cool. I’ll have your serve. 
Another for watermelon. Missed out as a kid because it looked like SO much fun to eat on a hot summer’s day!
And like Qadgop, I can and will eat every colour of capsicum (bell pepper) except for green. Now I’m sure if you blindfolded me and I was to taste samples of each kind, I probably wouldn’t be able to tell the difference. But yeah, I buy and love the red varieties, just not the green.
Coffee. Somehow I just never acquired the taste. It always seems bitter and burnt to me. When I do drink it, I need sugar and a whitener. I will have a latte or something at a coffee house. Occasionally I buy B&J coffee toffee crunch, or at 31 jamoca almond fudge. I’d buy Starbucks frozen frappuccino bars once in a while when they were still available.
Pepperoni, especially on pizzas. As far as I’m concerned, it just doesn’t belong on a pizza; just cheese and sausage for me, and mushrooms if I’m in the mood.
I don’t like spicy hot foods in general, except when I can get a beer to nullify the heat. And Chinese hot mustard is great with egg rolls.
Licorice and root beer. Also, celery root and brussel sprouts which have a hint to licorice flavor. Oh and cloves. Basically anything with that “earthy” flavor. And yes, I DO know what dirt tastes like. 
Also, too much black pepper. If I can distinctly taste it, it’s too much. I posted in another thread about how my favorite Mexican food place changed chefs and the food went drastically downhill. The greatest abomination was salsa with way too much cracked black pepper (which AFAIK has no place in salsa at all). When I asked the waitress why there was so much pepper in the salsa, she said it was because that’s the way the chef liked it. Ugh!
Fat on meat. I will carefully cut the fat off all meat. Other fats are fine. I can happily eat a piece of bread thickly spread with butter. Which leads us to…
Bacon-that is, typical American strip bacon. Don’t hate it just don’t really see the point. Yes, a BLT is a good sandwich but as for adding bacon to everything-just don’t. It adds nothing to breakfast (except the very thought of bacon or sausage in the morning gives me heartburn-so partially a conditioned response). It doesn’t enhance a salad or a burger. If I am having meat with breakfast I would prefer Canadian bacon or ham. If I want a salt and fat fix, there are other things so much better, like potato chips or olives. Why would somebody want to eat nasty fatty greasy bacon instead.
Oranges, or really any citrus flesh. You can keep your weird chewy little alien pods. I’ll drink the juices, even grapefruit juice, happily. But the bizarre, chewy texture of the flesh is just a recipe for gag time in my mouth.
I’ve no cite for this (would love to know the dope actually) but I have heard this is a specific genetic biological effect. As in there is a specific gene that X percent of people have that makes cilantro/coriander taste soapy and horrible.
Peas. Disgusting, whether fresh, frozen, or canned, mushy or whole.
Beans–the legume type. I’m OK with green beans. Or wax beans, though I can’t see the point, as they taste like…wax.
I won’t eat sushi, but that’s because some food scientists ruined it for me by discussing parasites thereof. I’d had it once before that and liked it.
And slightly off-topic, I’m also grossed out by yellow cheese on pizza (like American, cheddar) and, of course, pizza with pineapple and ham on it. Abominations. Why they’re popular, I’ll never know.
Also, catsup on a hot dog is nauseating, but that’s cultural. Almost everyone from Chicago knows better than to put catsup on a dog.
Avocado- why in hell is this even considered food? Satan’s pus filled scrotum
Ketchup-nasty corn syrup with “tomato” added, Satan’s semen
Green olives-again, why in hell are these disgusting things considered food? Satan’s pickled testicles
Coffee from starbucks or starbucks wanna be clones-why are you serving me over heated and burned coffee you let sit on a hot burner all day yesterday in a glass pot at very over inflated prices? Convenience stores, for the most part have better coffee. Starbucks style coffee is Satan’s ass juice after a hard night of drinking and eating pickled eggs with sauerkraut
All these “foods” are punishments inflicted upon us by an angry vengeful god for some sin committed by humanity that was so egregious that it has slipped from the collective memory.
Ok, maybe that was a bit over the top, but not much.
Pumpkin, squash, beans of any sort. My main issue with these is their texture, with awful taste a close second. Also macaroni cheese, I eat almost any other pasta dish but mac&cheese just doesn’t work for me.
Since I feel compelled to offer my opinion here: some of these answers don’t really seem like foods that nearly everyone else likes. But CINNAMON ROLLS? MACARONI AND CHEESE? Those are legit answers. It blows my mind that someone can not like those foods.
Green or ripe? Those are NOT the same thing.
Are you a super-taster? Some people really do have more sensitive taste buds than others.
Sounds like this theater served kettle corn or some similar variation, which is also very popular in the Midwest and is sweet.
When my sibs were teenagers, they both worked at an independent movie theater that used real butter on their popcorn. At least once a night, someone would bring their Vat-O-Popcorn back and ask, “What’s this stuff all over my popcorn?” Yup, real butter, not butter-flavored oil.
No, it’s because Americans like their food very bland. They love fat.