Is vaping safer than smoking when you're pregnant? Experts weigh in BabyCenter 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 Free Smoking: Health Risks You Should Know Max Hospital Vaping during pregnancy harms offspring even without nicotine, study finds Oncology Central Smoking and Tobacco Use Vaping before, during and after pregnancy: leaflets and infographics ASH