Does Vaping Cause Secondhand Smoke? Understanding the Hidden Health Risks of Vaping UL Research Institutes 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 A smoke free and vape free environment during and after pregnancy is essential for your baby's safety. Learn more at SNHD.INFO SUID. Symptoms Of Second Hand Vape Smoke Can Second Hand Vape Smoke Affect Pregnancy Second hand smoke Dangers of Smoking During Pregnancy Explained by Expert Midwife