Did you know that the Fire and Police Dept. have no obligation to rescue you in case of fire?
The smoke detectors will detect all types of smoke and don't forget that non-smokers have got much more sensitive noses than smokers and so the maid will smell it when she cleans up and then she'll find the cigarette butts in the garden below the window. The room will stink of tobacco and you'll be for it.
So what if the motorist sees the officer in street clothes??