My reaction? Last time I checked, it's just a plant that people use for festivities. It can't hurt you. If you're an animal, then that's a different ball game.

[Then again, Kojirou's mind was going full swing on the possibilities on what Echidna could've done to the plant. Lacing it with drugs was his first guess. But she might've not been savvy with the drugs from this era... But suddenly, he was feeling a little hot and his head was getting hazy. That was making it harder for him to concentrate on his theorizing. Swallowing a bit, Kojirou stumbles back and puts his hand on a table to secure himself. A suspicious eye stares her down through his long bangs of hair.]

Hey... Is it getting warm in here? You didn't mess with the air conditioning, did you?