First, Second and Thirdhand Smoke: The Differences and Dangers Tobacco Stops With Me Secondhand vape plumes could form lung damaging radicals American Chemical Society Secondhand vaping: The latest vaping health risk CNET How secondhand smoke, thirdhand smoke & vaping affects kids Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals According to the American Heart Association, the risks of secondhand smoke from vapes are still being discovered. Learn about the dangers of secondhand smoke from vapes.