Vaping, Teens & Pregnancy Boston Children's Hospital Smoking during your partner's pregnancy Raising Children Network Nicotine products in any form, whether from cigarettes, vaping or chewing tobacco, pass into a mother's bloodstream and through the placenta to the growing baby. Quitting nicotine is hard for many people, Vaping more effective than patches for pregnant women, study finds Dr Colin Mendelsohn Fetal exposure to vape liquids linked to changes in skull shape Smoking and Pregnancy: The Risks of Vaping