Secondhand Smoke and Electronic Cigarette Aerosols US EPA Secondhand smoke and secondhand aerosol Is Second Hand Vape as Dangerous as Secondhand Smoke? Vapesourcing Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM Vape Smoke 220w Risk From Second Hand Smoke On Children Greater Than Previously Thought Second Hand Smoking From Vaping