E cigarettes pose threat to users' and bystanders' health Novant Health Healthy Headlines Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN E cigarettes and Vaping Commercial Tobacco Use MN Dept. of Health In secondhand vape, scientists smell risk American Heart Association Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC 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.