I don’t like truffles. Norcia, Italy reeks of them. It was an awesome town to visit. I think I recall they even sold honey with truffle in it, which is either an offense against the honey or the truffle, but seems to have enough popularity to warrant keeping in the shops. In any case, go one day if you can, and enjoy the thick odor of truffles, wild boar sausage and aged cheeses while walking in a medieval village. Here are some examples: https://cosedelposto.com/collections/specialita-al-tartufo
For that matter, I don’t like seaweed in my egg, which I encountered in Wales. If you do like that sort of thing here are some great recipe ideas: https://beachfood.co.uk/recipes.php
Things I didn’t used to like but now do like: olives, brie-family cheeses.
Things I didn’t used to like and still don’t really like very much, but can eat if necessary: okra, sushi, seafood in general.