Prevalence of vaping, vaping associated short term symptoms of respiratory and cardiovascular morbidities, and factors associated with the initiation of vaping among young adults in Kuwait Health effects of exposure to second and third hand marijuana smoke: a systematic review CMAJ Open Secondhand Vape Exposure: Effects, Who's at Risk, and More Even if an employee only uses marijuana on the weekends, it could still show up on their workplace sponsored drug screen the following week or later. According to some estimates, traces of THC