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, Women who vape are more likely to have low birthweight babies, study shows UCLA SA Health Smoking and vaping during pregnancy can be harmful to your unborn baby. The chemicals in cigarettes and vapes can damage your baby's Instagram Exposure to vaping in utero can change baby's face, skull: study