Evidence Mounts About the Health Impact of Second Hand Vaping Bisnar Chase Have you heard of Third Hand Smoke , When most people think about the risks of smoking, they picture first or second hand smokethe smoke you inhale or breathe when someone lights up near you. But Parents' second hand marijuana smoke may cause colds in children New Scientist Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Secondhand Smoke & Drug Tests: Can You Fail? (2026 Data) PrestoDoctor