Secondhand smoke and secondhand aerosol Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice Sleeping baby safety tip: Keep baby's environment smoke and vape free. Secondhand smoke in areas where a baby sleeps or spends time, like home or the car, increases the risk of health problems. Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me