It brings not only a negative response from me, but often a punitive one, as well.
I mean, clearly gaslighting is *malicious* in intent: it's not a mistake or a misunderstand--although they'll try to wriggle off with those as excuses. They *know* that I have first-hand experience of X, and to stand there and tell me that I didn't see/do that is clearly an attempt at either beating me down (personal submission) and/or manipulation fofr the benefit of the gaslighter.
I hope I never do anything remotely like this to anyone, even if I don't like themr