I always got apple juice when I was ill as a kid, and I was ill a lot. As a result I cant stand apple juice or cider, they taste like sick

Orange soda.

With my third baby, she did not want to come out (in stark contrast to her sisters, who all seemed to want to give me about one hour of advance notice before getting born) and the midwife said, before trying induction, try castor oil, sometimes it will kick the labor on. Not a spoonful, no. A whole bunch. And don't puke it out. I chased it with orange soda because I liked it but figured I could certainly manage without it.

Oh God. I couldn't even look at orange soda without nausea for several years. And it didn't even work, I still had to get induced!

My parents took me to an Italian restaurant when I was a child, and the smell of olive oil was so overpowering I couldn't get in. Still have trouble with olive oil to this day, maybe 15 years later

Peanut butter smells bad. Peanut butter smells like mouse traps.

No one else could set them (disabled, or cried about it) so it was all on me

Can't stand the smell of peanut butter now

You know how to can get turned off of eggs if you get the egg ick.

I don't think I do know actually. But here's an attempt at answering this question anyway:

And bonus, anybody know why that happens?

We are usually very quick at relating sickness or even discomfort to the food we ate at the time or slightly before. This is a very valuable trait to avoid food that is unhealthy or even poisonous. But it's only based on correlation, so it can turn us off food that is not actually causing the sickness but we just happened to eat at the time.

Had slightly poisonous mushrooms, vomited for three days.

Needed two years to be able to eat mushrooms, again.

The body remembers.

Canned tuna. Childhood daycare food. Both my brother and I can’t stand it. It never made me vomit but it was a real challenge to get down, and I think he threw up from it once. I’m not sure what she did to make it so vile but there was a lot of mayo too and I couldn’t handle mayo for a very long time.

American cheese, because I threw up once as a kid after I ate some. Honestly no big loss, I wouldn't eat American cheese now even if I'd never thrown it up because it's a trash cheese.

Also, any meat where I can tell what it once was. I don't want to eat anything off of a bone, or anything's skin, or god forbid a fish is served whole. Growing up we used to have whitefish sometimes on the weekend and no fucking thank you.

I had the flu one time and barfed up shredded hashbrowns. Let me tell you, that stuff gets all stuck in the crevices of your mouth and teeth when you vomit it. Couldn't eat hashbrowns for a good year after.

Three bean salad, or anything with sweet vinegar sauce. That combo of vinegar taste and sickly sweetness is the single most disgusting thing I’ve tried. I can stomach most of the foods I dislike, but three bean salad will literally make me gag if I try to put it in my mouth.

Only good I know for a fact I couldn’t eat was McDonald’s. Got food poisoning when I was 14 and wouldn’t touch it for like 10 years. Then I was craving a big Mac one day and I’ve been back on since haha

Went to a party once and ate a bunch of nacho cheese doritos among other things. Ended up getting sick from some undercooked cookies and I could taste the doritos when I threw up. Now I get queasy just thinking about them

Sugar-roasted almonds. I was given a bad recipe to slowly cook the unpeeled almonds in sugar water until everything is dry. After a few bites the almonds tasted bitter and it took me some time to get that awful taste out of my mouth. Since then I can't stand them.

Sweet potato fries. Or overly orange fries for any reason (sometimes the frying just seems to make them orange, especially curly fries?).

Was youngish, friend took me out to lunch and I had a meatball sub with sweet potato fries. Yum yum. Until, of course, 3am the next morning when all that came up and was orange and potato-y. I refuse to try them again to this day. Although I love sweet potatoes, lol, just not sp fries.

I used to love Chilli con carne, but not anymore. One day I woke up not feeling well and we were having Chilli con carne for lunch. Despite my condition, I sat down at the table and started eating. It didn't last long. In a few minutes, I was feeling queasy and had to dash to the bathroom to throw up. Ever since then I can't look at, smell or eat a Chilli con carne dish without remembering that day.

gin, and because of flu, ham for a long time. fortunately i can eat ham again.

This doesn't fit the question at all, but I like to eat chicken and stars when I'm sick. They mostly taste like chicken flavored salt and taste exactly the same on the way back up.

Blueberries.

My family has never been financially in a good place, but especially when I was still very young. From what I understood my grandmother had a friend who owned a blueberry farm, and one day my mother brought home a giant thing chock full of blueberries. Deal was we could wash, package, and freeze them. Then we could have blueberries all year.

We went to work, though my help at that age was largely superficial, but we filled most of our freezer and all of a rolling cooler which was going to my grandparents. All washed in the colander and packaged in ziploc.

The other thing my parents would do was make enough dinner for the whole week. They both worked, my dad had 3 jobs at somepoint, and I often went with my mom to hers. So when we all got home it was easy to just nuke whatever had been made rather than make it then.

This week's dinner was mac'n'cheese and hot dogs, yum right! Except no, my mother forgot to wash out the colander and it was all blueberry flavored. One week of blueberry flavored mac'n'cheese was enough for me to grow a healthy distaste for blueberries.

Cream soda. I had a plastic dinosaur shaped cup to drink from one summer and was required to keep it the entire time. I drank a 2 liter of cream soda over a couple days then every single other thing I drank from it tasted like cream soda. Water, milk, other soda. For a whole summer. I don't drink cream soda now. Weirdly enough, my brother, another dinosaur cup haver from that summer, loves cream soda.

Mushrooms.

Everything about them disgusts me, from the way they look, to the way they smell, the texture they have and the disgusting mouldy, dirty taste. Even seeing them growing in the ground grosses me out and I'll take a wide path around them to avoid going near them.

Outside of magic mushrooms, they have literally zero redeeming qualities. I hate them with a passion and it's basically the only food I never grew out of hating.

Gin, I think.

It's debatable about whether this counts for the question, but I'm commenting because this wasn't a case of "drank too much, was very sick" kind of story, which many people have about alcohol. Basically I was at a small party and I downed a shot of clear liquid that I believed to be vodka. It was not.

I didn't even know there was any gin in the house, I hadn't seen anyone drinking it. I wasn't keen on the taste of gin before, but the unexpectedness of the taste was so bad I was sick. People were concerned because they worried I was overly-drunk, but it was entirely the flavour that did it. Now, anything that tastes or smells remotely similar to gin makes me feel sick.

Though even if we are counting gin as a food here, this is very much gin not being consumed in its normal way - I have never met anyone who would choose to do a shot of neat gin.

lemon baked goods make me legitimately naseous (how tf u spell it???)

I get the chicken ick often throughout the year. I can eat it grilled or slow cooked any time. Baked or stove top gives me the ick at least a third of the time. It’s mostly a taste and texture thing.

Unrelated but I haven’t been able to eat chicken parm for 15+ years. I ate it as a school lunch (the chicken patty on spaghetti noodle kind) and threw it up during sports practice after school. I remember the awful breading taste and noodles hanging from my face mask.