As a kid, I got a lot of chest infections*, so took a lot of antibiotics, mostly in liquid form with some child friendly flavouring added. The banana was the worst, but I could just about gag down a teaspoon of it four times a day, as directed. One summer day my father bought for us a treat -
choc wedges! (an ice cream). But instead of getting the standard vanilla we expected, he bought banana flavoured. It tasted just like the penicillin. But my father, born during the depression, could also not tolerate waste so he made me eat the whole thing. Since that day I have not been able to go near bananas. The smell makes me retch. I rather clean up vomit, than overripe mashed bananas. I was once baby sitting a toddler, and had to leave the banana she smeared in her hair because I didn't think I could clean it up without throwing up.