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. Vaping During Pregnancy: Are e Cigarettes Safe for Baby? Toxic Thirdhand Smoke Residue Reaches Many Children Even in Nonsmoking Homes Research Horizons Experts Warn About the Lifetime Effects of Secondhand Smoke in Children CardioSmart American College of Cardiology Nicotine Smoking, 'Vaping', and Breastfeeding La Leche League Canada Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN