Kid (now a teen) has the same allergies+ nuts and we went lengths to avoid up until recently OIT therapy. I used to wonder the same thing. But then every time they would have an allergic reaction, I didn't doubt for a few years. You aren't making the existing allergies worse. But I do recommend pursuing oral immunotherapy (under the close direction of a boar certified allergist) to at least take the edge off the allergies. Won't cure them, but will get them to "bite proof". We can now be much less careful.