This article is from the Stop Smoking FAQ, by firstname.lastname@example.org with numerous contributions by others.
The 'smoking dream' is a bizarre yet very common phenomenon among
ex-smokers. It might hit at different phases of your quitting experience;
it might hit when you think you don't even think about smoking anymore.
These dreams tend to be very vivid and so realistic that you will probably
believe you actually smoked; you may even wake feeling raw in your throat.
But, no matter how real the guilt feels, dreaming about smoking is not
equivalent to actually smoking! So when the dreams come, try not to be
bothered by them, just amused at the power of the subconscious.