I'm not so sure of this.
What, exactly, is the definition of "allergy," as compared with say, "making one slightly uncomfortable"?
I like apples, chicken noodle soup, and tea, but I usually avoid them like the plague.
They cause a minor "funny feeling" in the stomach (but no more than that), where one gets the sensation of cast iron.
In other words, not a "normal" feeling.
However, I think to call it an "allergy" is rather overdoing it.