They'll happily take the $20 and then report you, because it's their job on the line when the next guest complains that the room smells like shit.

There's no way to conceal cigarette smoke indoors. It's painfully obvious that a room's been smoked in.

Vapes are way lower-key, and as a non-smoker/vaper/etc, unlike cigarettes, someone vaping in a space really doesn't bother me.

Why wouldn’t they report you? It isn’t like you know who your housekeeper is or that they have any reason to believe you’ll be a repeat guest that will continue to tip them.