Short answer:
They didn't mention it, even in contexts like bee stings where one might encounter serious allergic reactions.
Prior discussion:
Variations of the this question have been asked several times before. More can always be said, but you might look at the responses by u/michellesabrina and u/agentdcf in
How common were allergies during the Middle ages? Were they a known disease or a mystery?
and I added a bit to the topic in