My step-father’s parents smoked a carton a day. Each. They started smoking before breakfast and stopped just before sleep. Their trailer home had a 2-3’ cloud of haze below the ceiling and every surface was sticky. I’m not how many years they smoked like that, but probably decades.

As a kid, I could not breathe in there. This would have been late 70s. No way they could have afforded that habit at today’s prices.