Study finds secondhand smoke may be source of lead exposure in children, adolescents Vital Record Online: Up In Smoke (or Vape) Health Consequences of Smoking, Vaping, and Air Quality on the Human Body Child Care Resource Center CCRC Secondhand smoke and secondhand aerosol ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine,