Young woman smoke vape. Female inhales vapor of electronic cigarette. Mouth Close up Person Exhaling Vapor While Holding Stock Footage Video (100% Royalty free) 3683166733 Shutterstock 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 The dangers of electronic cigarettes Article The United States Army Does Vaping Produce Smoke or Vapor? Ecigator