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, 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, How Secondhand Smoke Affects Children and Pregnant Women Vaping while pregnant could cause craniofacial birth defects, study shows Frequently Asked Questions Thirdhand Smoke Resource Center Study finds vaping in pregnancy harms both mothers and babies