From the page: If you dream about some particular subject it is not often that the dream is about that. Dreams speak in a deeply symbolic language. The unconscious mind tries to compare your dream to something else, which is similar. Its like writing a poem and saying that a group of ants were like machines that never stop. But you would never compare something to itself, for example: "That beautiful sunset was like a beautiful sunset". So whatever symbol your dream picks on it is most unlikely to be a symbol for itself.
People who have smoked cigarettes for a long time who stop, have reported much more vivid dreams than they would normally experience. Additionally, according to the Journal of Abnormal Psychology: 窶oeAmong 293 smokers abstinent for between 1 and 4 weeks, 33% reported having at least 1 dream about smoking.