Secondhand smoke and secondhand aerosol Secondhand Smoke Vermont Department of Health Toxic Thirdhand Smoke Residue Reaches Many Children Even in Nonsmoking Homes Research Horizons Flyer: Vaping During and After Pregnancy Central District Health Vaping During Pregnancy: Are e Cigarettes Safe for Baby? 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.