Vape residue may harm unborn babies, mouse study suggests Avoid Impairment Safe Sleep Academy 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 In the United States, about 8% of all women who are pregnant smoke cigarettes, and another roughly 4% report using electronic cigarettes or vapes. To learn more about the dangers of smoking Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals