He tells the truth when asked - I got stung when all the insects got out - and suffers through an irritable inspection of the places he'd been stung or bitten, and the following decree that as he was already mostly healed, he didn't need any aftercare for them. He didn't mind. It was worth it to see the Professor shriek and jump and run around the labs, especially since he never figured out that it was Sephiroth who opened the glass containment units and shook them until the hives erupted.