When smoking in a shower (college dorm, apartment) the steam carries the smell away insuring the smoker is not discovered. Double steam is the proper procedure for clearing marijuana smoke. One must have the shower steaming while smoking ( best to use a bong or bubbler because the water helps cool and filter the smoke) and then leave the hot water running for a minute after the smoking is done. Then turn the water to cold and leave the bathroom. it will take about 3-4 mins to clear the steam. once the steam is cleared turn the water back to hot for at least 10 mins before shutting off the shower. this method is best for removing smell and works. also it is acceptable to say "mischief managed" in celebration after the smoke session.
jack: mike, make sure to double steam so the RA's dont smell it