I was going to mention that.
I also suspect that DNA affects the way certain things taste, so that children born in cultures in which spicy food is ubiquitous enjoy the taste.
Personally, I hate spicy food. So did my mother, and she hated it even more than me-- she thought more than a teaspoon of cinnamon in a carrot cake was overdoing it.
I didn’t find out until I was in my 40s that there are flavors under the hot sensation in Indian foods when my husband gave me saag paneer mixed with a LOT of white rice and yogurt. I actually liked it.
DH likes spicy food, and so does the boychik.
I know that in that paper test, when paper strips are handed out to a group, and some people just taste paper, while others find them bitter, they taste just awful to me. Some people in the group said the paper tasted bitter, but not gawd-awful, so I guess there are degrees.
It’s probably true for capsaicin as well, and children who can’t taste it, or taste it well, or for whom it has some taste other than “I’m on fire” taste all the other flavors that for me are covered up by the burning sensation.
And for the record, for me, the sensation of capsaicin really is burning. It feels for certain that my mouth is being damaged by whatever this is. I experience a desperate need to put out the fire.
I also hate cilantro, although, for me, it doesn’t taste like soap-- it tastes more like something in the food was spoiled. And the odor of food with cilantro is a little like BO. My brother agrees with me on this, so there you are-- DNA. He doesn’t care for hot food either, although he likes a lot of less hot seasoning in his food-- that might not be DNA, though, but because for the last 20 years he has been eating his Korean MIL’s cooking.