Surface Detection of THC Attributable to Vaporizer Use in the Indoor Environment Scientific Reports Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me Secondhand smoke and secondhand aerosol Can You Fail A Drug Test From Secondhand Smoke? The Sanctuary Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center