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I once spent the night in a hotel room that literally had tan walls from the chronic smokers. The walls were literally sticky with tar. It was unreal, and I was wheezing for days afterwards. I'm pretty allergic to tobacco, so I have a low tolerance for it. YMMV...
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Once upon a time I was looking to buy a house. I looked at one place that was inhabited by a smoker. The smoker, I assume a he, mostly smoked in one room of the house that had been turned into a den, man cave, sport room. The smoker has painted the room the color of his college team, which thankfully was a dark color. The dark paint hid the smoke on the walls. However, the ceiling was stained in a tan color from his smoke. I swear you could smoke meat in that room. Even though he supposedly only smoked in that room, the whole house stank of tobacco smoke.
I told the agent there was no way in hades I was buying that house. All of the carpets would have to be replaced, the walls painted, not only because of his college team colors where hideous, but to remove, err, cover up the smell. Then there was the ceiling problem. These were cheap a...ss ranch houses and the ceilings used popcorn to hide imperfections. The cost to remove the popcorn and repaint the ceilings was not something I wanted to deal with. Could have lowered the price on the house but I just went down the street a few lots and bought a house without all of the smoke problems.
We were on a ferry from Hong Kong to mainland China years ago. There was no smoking on the ship, except the crew in the pilot house smoked.

The pilot house door was on our level of the ship so we smelled smoke during the 2-3 hour trip. When crew would open the door, we could see the smoke cloud in the pilot house and I don't know how they could breathe in their. Looked like they had a wood fire going in the pilot house. The windows in the passenger area of the ferry where also stained with smoke.
We had blue skies in Honk Kong, but as we got towards mainland China it got foggy, which was odd since it was already mid morning so the fog should have burned off. Turned out the fog was smog and we did not see blue sky for another week when we got back to the US. :shocked:
Later,
Dan