While he doesn't quite understand on an experience level why she's so apprehensive about it, what he did know meant he wasn't going to question it too deeply. Being manipulated once would reasonably make someone wary of having it happen again.

Being transformed into that person or thing was not going to help matters. Carefully he rises to his feet, mindful of the bucket of toxic gasses. "As you'd like, then. I'll leave you to your meal and .. do something with this."

Minus Esuna, that's easier said than done, but he picks it back up anyway. Time to .. find somewhere that looked good to contaminate.