How secondhand smoke, thirdhand smoke & vaping affects kids 2nd Hand Vape Smoke And Pregnancy 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 Frontiers World no tobacco: effects of second hand smoke (SHS) and vapors on the developing and adult brain Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center