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, Five things to know about youth nicotine use Stanford Report Secondhand Smoke Is a Risk for Pregnant and Breastfeeding Moms The Wellness Coalition Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Tobacco and nicotine poisoning Poison Control Does Vaping Produce Smoke or Vapor? Ecigator