Effect of second hand fumes from vaping on young lungs Project Filter Secondhand Vape Informational Poster #1 Idaho Health Tools Study uncovers the hidden dangers of secondhand vape exposure to children Many people assume vaping is harmless to bystanders, but secondhand aerosol can contain ultrafine particles and chemical residues. Researchers are examining how exposure may affect airways and overall health, especially for children Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC