I’ve consistently gotten a bad reaction to fresh dill (lip/mouth/face swelling, itching/burning sensation) so after a few occasions like that I am very careful to avoid it.
Recently while traveling in Europe, I accidentally had a dish with dill and... nothing happened. I was curious enough that I bought dill from the store and tried it directly, still absolutely fine.
The only explanation I can think of is that my reaction is not to dill itself but to something, probably a pesticide, which is only used in the USA but not allowed for use in Europe (EU). What pesticide could it be?
(As far as I know, it’s just dill - I may have gotten a similar reaction from mizuna once, but leafy greens like spinach, lettuce etc as well as other fresh spices like parsley, cilantro etc are fine)