Umm well I smoked up until the day of surgery. I told them I smoked and they said don't smoke 24 hrs. You need to tell the anesthesiologist if you smoke so they know. Also smoking Mary Jane is the same as nicotine. I had surgery sept 15th . No issues. I can tell you this I never want to smoke again after getting a second chance to better my life. You will see. Smoking is gross and you're about to get healthy!