Food allergies. And I picked it up in nearly every credible source on the subject.
But there are other sorts of allergies. And consuming something that you have another sort of allergy to can often still cause a reaction. I’m for example pretty damn allergic to urushiol (which is apparently mostly hydrocarbons). And if I were to eat any, it would probably kill me. I’m also pretty damn allergic to bee and wasp stings, but I could probably drink bee venom and be just fine. And on the other side of it the kid with the peanut allergy isn’t getting contact dermatitis from legumes.
That’s why I said if, cause once you get outside dietary allergies I dunno. Like you said you can be allergic to some surprising things that are simple chemically. Like copper. But those sorts of things are both rare as a category of allergens, and rare in terms of incidence.
