How can I protect my child from thirdhand smoke in homes? Thirdhand Smoke Resource Center Study finds secondhand smoke may be source of lead exposure in children, adolescents Vital Record Secondhand vaping may pose risk to your kids: New study Secondhand Smoke and Children Secondhand smoke and secondhand aerosol Experts Warn About the Lifetime Effects of Secondhand Smoke in Children CardioSmart American College of Cardiology