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. First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me What You Need To Know About Vaping Secondhand Electronic Cigarette Aerosol and Indoor Air Quality US EPA Can I be Affected by Secondhand Vape Smoke? Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN