Early life secondhand smoke exposure assessed by hair nicotine biomarker may reduce children's neurodevelopment at 2 years of age ScienceDirect Second hand vape smoke linked to more asthma symptoms in kids Frontiers Impact of e cigarette vaping aerosol exposure in pregnancy on mTOR signaling in rat fetal hippocampus Frontiers Publishing Partnerships Prenatal nicotine exposure during pregnancy results in adverse neurodevelopmental alterations and neurobehavioral deficits