Secondhand Smoke Second hand E cigarette Vapour Increases Risk Of Poor Respiratory Health Study Finds Cigarette Smoke Detector Parents using e cigs expose kids to dangerous secondhand vapor Futurity E cigarettes pose threat to users' and bystanders' health Novant Health Healthy Headlines First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me 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.