 [ Symptoms ] how long does 5 puffs of marijuana last in system for one time smoker the day that i had smoked 5 puffs was on july 18th then the day that i got offered a good job was august 1 that same day i had to go take a drug test urine drug test iam a thin male weighting only 140 pound and i have a fast metabolism i do not gain any weight i have played allot of soccer from july to august 1 so i do exercise [ Disease ] it usually takes about a month regaurdless if this is your first time or your tenth best solution dont smoke weed simple as that