Something like that.

[Briefly, Rokuta is just... angry at the suggestion. Any violence is bad--- Shaking his head, he runs a hand through his mane and scratches his scalp.]

Ain't gonna make me sick unless I already am, but enough of it leaves a residue all its own. [And affects them negatively, if not in the same way blood does.] It's unpleasant, that's all. I'm not gonna be hurting anyone either way.

[Can't, more like, but he's not willing to spell that out.]