Does Vaping Cause Secondhand Smoke? Is Secondhand Vape Smoke Bad for You? The Truth on the Trend Molekule Vape residue may harm unborn babies, mouse study suggests Parents using e cigs expose kids to dangerous secondhand vapor Futurity Secondhand Smoke Vermont Department of Health 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