What harm does second hand fumes from vaping cause to young lungs? Medical experts want to know ABC11 Raleigh Durham In secondhand vape, scientists smell risk American Heart Association What harm does second hand fumes from vaping cause to young lungs? Medical experts want to know ABC11 Raleigh Durham Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC 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.