So do a lot of other things. This is not a usual reaction/sensitivity. You may be victim of a psychosomatic effect. I.e. give someone water and tell them it’s alcohol and they will act drunk for they believe they are.

You might benefit from getting some help. In particular those symptoms may be something you are feeling subconsciously all the time or of some undigested trauma.

There are also people who feel bad seeing dogs, cars, trains rolling into stations and myriad other potentially dangerous things.

Yes i am. This is not the problem here though, I was a heavy smoker for a year (daily) and kept trying to tell myself I’m not feeling any negative effects because I really do like smoking weed, but I came to accept that it’s just harmful to me.