[He throws back his head and laughs.]

Bold of you to presume I couldn’t out do him in poisons as well!

[And he continues speaking like the guy isn’t right there. Clearly gearing up to make this guy even more uncomfortable.]

In order to know how to make medicines and cosmetics, you must know what is good for the body- and by extension what is not.

So I’m actually quite adept at poisons, though I haven’t made a point in marketing them. Perhaps I should… I’m sure they might be appealing to those slighted by a cheap scam.