I WOULDNT SWEAT IT. I USED TO SMOKE WHEN IT WAS A CONDITION ON MY PAROLE AND WOULD PASS AFTER SMOKING A FEW DAYS BEFORE. AS LONG AS IT'S NOT AN EVERYDAY THING IN YOUR LIFE AND YOU SMOKE OCCASIONALY, YOU SHOULD PISS CLEAN. LIKE DUDE SAID DRINK LOTS OF WATER OR CRANBERRY JUICE. GET SOME EXERCISE TO SWEAT IT THROUGH AND IT SHOULDNT BE NO THING.