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That does not make them medical warnings, though occasionally a dream nudges someone to pay attention

Health Risks When cigarette smoke circulates through HVAC systems, it impacts more than just equipment: Aggravates asthma and allergies Triggers respiratory irritation Contributes to long-term indoor air pollution For families with children, elderly residents, or anyone with health concerns, cigarette smoke in HVAC systems poses a serious risk

And we as scientists are constantly struggling to keep up with these changes

Reduced oxygen : Smoke reduces the amount of oxygen in the atmosphere, which is necessary for insects like mosquitoes to survive

PAHs, Polycyclic Aromatic Hydrocarbons