Third-hand smoke can contaminate non-smoking areas

The video discusses the presence and impact of third hand smoke in non-smoking environments. It highlights a study showing that third hand smoke chemicals constitute a significant portion of air mass in classrooms. An experiment demonstrated that these chemicals increase when cigarette smoke is treated with outdoor air. The video also explains how third hand smoke residue on surfaces can become airborne again, especially when exposed to certain chemicals, and how HVAC systems can distribute these particles throughout a building, posing health risks.

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