Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Secondhand Smoke "Family" Maine Prevention Store Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Secondhand Vape Exposure: Effects, Who's at Risk, and More Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA