I'm renovating a house that was previously occupied by smokers. I knew going in that the "beige" paint was not a color that anyone had originally selected for the interior, but I was very surprised one morning to find that the new coat of paint I had applied the day before (and which seemed fine at the time) had flowed down off the tops of the walls overnight, creating long rivulets of paint running down to the floorboards. I had to remove the nicotine layer with mineral spirits to get the paint to stick. Somehow, there's no cigarette smell in the house, which is a happy miracle.