I smoked a cigarette for the first time today. How long will it take for iit to get out of my system?

See below . The nicotine will be gone in six to twelve hours. Cotinine levels will be around longer.
Less than a day. The nicotine will be gone inside of a day and the tars will be cleaned up by the body's defenses in even less time than that. Don't go for a second cigarette!
Varies. Carbon monoxide will be gone after 4 months when all of the red blood cells it covered are replaced by new ones. Nicotine will be gone within a few hours. Heavy metals with stay with you forever until you get chelation therapy to remove them--but for one cigarrette i would not bother. Other toxins as in pesticides may take other variable times to be expelled ; www.Medacpc.Com.