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, Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Smoking, vaping & pregnancy: in pictures Raising Children Network Second Hand Vape Smoke Pregnancy The Effects of Smoking While Pregnant AND Resources to Quit Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC