Vaping during pregnancy harms offspring even without nicotine, study finds Oncology Central 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, 4 myths about vaping and pregnancy busted Your Pregnancy Matters UT Southwestern Medical Center Smoking in pregnancy Deadly Choices