Smoke particles adhering to surfaces
I'm about to take a room occupied by a smoker for over 15 years. When the furniture was removed, the differences in the colouration of the wallpaper were startling.
Thank goodness the entire flat is to be redocorated before I actually move in.
But my point is that I think I would rather smoke particles adhered quickly where they could do less damage than simply be floating around as pollutants in the atmosphere or adhering to plants, building up in concentration over time, which is presumably what will happen under the new UK smoking ban.
There are alot of areas that don't curently get much vehicle pollution but will now get smoke pollution.
I hadn't considered that before.