A common recommendation is no smoking one month before and then one month after surgery. However, I shorten this to two weeks for my patients because I know that it is a very difficult thing to quit and I'd rather them concentrate on no smoking for two weeks before and after rather than cheating during a longer period. Some surgeons are very strict and won't even operate on patients who smoke. I do not fell this way. I tell my patients that their risk of delayed wound healing is increased if they smoke. Tummy tucks are such an effective procedure that even if a patient has a wound that takes a few months to heal and leaves more scar tissue, they are still glad they did it. I discuss this on my website (link is attached). During surgery, I keep as much vascular supply to the skin flap as possible, particularly in smokers. Remember, nicotine causes the little blood vessels to constrict, so using nicotine gum is not a good option.
Of course, it would be great if you could use this surgery as a new start on a healthier lifestyle and plan on quitting smoking at the same time. You may find your confidence level is higher after the tummy tuck.