I think smoking rooms in hotels are still a thing, but they’re certainly less common than they were. My mother and I got stuck in a smoking room despite booking a non-smoking room well in advance and it was awful. Stayed just one night and our clothes smelled like cigarette smoke for the rest of the trip.
I don’t really care if people smoke, but gosh, ya’ll need ventilation.
I honestly learned it just because I hated having to change hand position to use a mouse.