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 Vaping During Pregnancy: Are e Cigarettes Safe for Baby? Smoking during your partner's pregnancy Raising Children Network Is Secondhand Vape Smoke Bad For Pregnancy? Experts Explain The Risks Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London