Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM asthma tobacco Asthma Initiative of Michigan While early research suggests it may not be as dangerous as secondhand smoking, it's still not harmless, experts say. https: www.wate.com news does vaping cause secondhand smoke doctors explain the side effects ?utm_medium=social&utm_source