Smoking brings a significant risk of cancer, stroke, heat attack, etc. From a Plastic Surgery standpoint it is a vasoconstrictor. Wound healing is all about getting oxygen and needed entities to the wound. It is well known that patients who smoke have a tremendous increase in their rate of serious complications, (infections, wounds falling apart, etc.). Nicotine is the main vasoconstrictor, so getting a patch or lozenge of nicotine won't help the vasoconstriction. Best to be off the tobacco/nicotine entirely before surgery. Please be honest with your Board Certified Plastic Surgeon. Together you can make a plan to quit and proceed with surgery. The amount of time between quitting and surgery will depend on the Plastic Surgeon and the procedure.