User blog comment:Relikz/Chapter 364: Tartarus Arc, Part 1: Immorality and Sinners, Review./@comment-3290324-20131220064649/@comment-7418318-20131220103600

Considering how much Erza hates, the Perfume thing might have been a subtle warning to Mira, one that wouldn't mean anything to the chairman... unless it was just a joke.

Besides, Mira in her Satan Soul form sucked up Cosmos' poison (or was it Kamika's?) and called it a treat to a Demon. That might not work with any kind of poison, but maybe it was enough for her to actually drink the tea and then neutralize the poison with her take-over.