Vaping may be an effective way to quit smoking during pregnancy New Scientist Second hand vape smoke linked to more asthma symptoms in kids Chemicals Health Effects of Maternal Exposure to Thirdhand Chemical Residue from Vape Aerosols Persist Long After Infancy Thirdhand Smoke Resource Center Nicotine or marijuana vaping exposure during pregnancy and altered immune responses in offspring Vaping while pregnant can change your baby's skull shape even without nicotine The Independent