Secondhand smoke and secondhand aerosol E cigarettes and Vaping Commercial Tobacco Use MN Dept. of Health Thirdhand Smoke Resource Center Protecting Californians What Are the Effects of Secondhand and Thirdhand Smoke? GoodRx Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Can You Fail A Drug Test From Secondhand Smoke? The Sanctuary