Allergic to more foods than I could list, holding EASA and Chinese class 1 medical, and been holding FAA class 2, no issues.
I'm not prone to any kind of reaction that could incapacitate me, but that's my personal assessment. As said before there is no lab test that could accurately predict your immune reactions.
I do state my allergies with my AME, who said there is no general rule on this. (I however didn't tell the Chinese...)