How can I protect my child from thirdhand smoke in homes? Thirdhand Smoke Resource Center Secondhand vape exposure detectable in children's saliva, breath Contemporary Pediatrics Secondhand vape exposure: Risks and side effects ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, Children at risk: Emory study uncovers the hidden dangers of secondhand vape exposure