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. Second Hand Smoke and Pregnancy American Pregnancy Association Early life secondhand smoke exposure assessed by hair nicotine biomarker may reduce children's neurodevelopment at 2 years of age ScienceDirect Tobacco smoking and vaping in pregnancy and neonatal outcomes: results from a UK cohort study 4.16 Secondhand smoke and pregnancy Tobacco in Australia Second Hand Vape Smoke Pregnancy Can Second Hand Vape Smoke Affect Pregnancy Study shows vaping nicotine