@curious   from wikipedia - they are a nasty little fish that stink to the high heavens, and they are normally pan-fried, which stinks of the whole house :(

Smelts resemble salmon in appearance, but are smaller, usually reaching only around 20 centimetres (7.9 in),

Smelts have been traditionally an important winter catch in the salt water mouths of rivers in New England and the Maritime Provinces of Canada. Fishermen would go to customary locations over the ice using horses and sleighs. Smelt taken out of the cold salt water were much preferred to those taken in warm water. The smelt did not command a high price on the market, but provided a useful supplemental income in times when wants were much less. The smelts were "flash frozen" simply by leaving them on the ice and then sold to fish buyers who came down the rivers on horse and sleigh. They were also a winter meal. They were gutted, heads and tails removed, rinsed in cold water then dipped in flour mixed with salt and pepper and fried in butter. Served with boiled potatoes and pickled beets, they were an addition to winter fare. They are still considered traditional Acadian fare

Liver.  I will not eat the thing that cleans out your body and makes the poo... not to mention its smells like ass.

And Im totalluy with ya @SchweddyBalls seafood = nastyass  and adds slimey snails to that list as it cross land and sea.

Dandelions!  Why you ask would you anyways! Good Fucking Questions.  But my yiayia(greek for grandma) does. Supposedly they make a good salad, but you got to cook them first.  OMG the smell  :-&   Never going to fucking happen. Ever

Mine are smell and/or texture issues.  Mushrooms, liver, tongue, lamb/mutton, oysters, cabbage, brussel sprouts, lima beans.  I've never tried cooking squid, sardines, or any unusual fish or seafood. I can barely cook venison.

I like lobster, crab and shrimp. hey're fairly sweet. Or maybe it's the butter they're usually drenched in! But I try not to think of what they look like. 

I try not to think of my food as it was alive.  I hate it when dh cooks fish and leaves the skin and scales stuck to the pan.

no instant mashed potatoes, no frozen vegetables (unless they are in a casserole that i make only like 4 times a year), no bbq ribs (i like them but i burnt them once and the smell traumatized me from ever cooking them again at home)

we all like seafood, but shrimp and fish is the extent of my cooking. if we want crab or lobster or anything else, we go to red lobster.

and alot of the nasty stuff that was mentioned like brains and rabbits we wouldn't ever even want to eat so it's not even an option here.....but i do cook menudo (a soup that uses tripe which is basically like cow intestines so it's like chitlins), i have made cow tongue and cheeks which we like and i've used turkey neck bones and pigs feet in some things as well.