What Chemicals Are Released During a House Fire?

Carbon monoxide is the most dangerous gas from a fire, as it is colorless and odorless. It can cause dizziness, confusion, and loss of consciousness at high levels. Carbon dioxide is also produced, which can displace oxygen in enclosed spaces, leading to breathing difficulty.

Hydrogen cyanide forms when materials like wool, silk, and some plastics burn. It is highly toxic and can affect the body's ability to use oxygen. Acrolein, another byproduct, is a strong irritant to the eyes and respiratory tract, often causing coughing and burning sensations.

The chemicals released depend heavily on what is burning. Wood and paper produce more carbon monoxide and creosote-like compounds. Plastics and synthetic fabrics release a wider array of toxic gases, including hydrogen chloride and dioxins when burned at lower temperatures.

Foam cushions and mattresses often contain polyurethane, which can emit isocyanates, compounds that are potent respiratory sensitizers. Electrical wiring and electronics add another layer, releasing brominated flame retardants and heavy metals. So, no two house fires produce exactly the same chemical signature.

Do not enter a fire-damaged home until officials say it is safe. Wear gloves, a respirator, and long sleeves when handling debris. Open windows to ventilate, but avoid turning on fans that might spread particles further into the house.

For extensive damage, local water damage pros can assess what is salvageable and what needs removal. They use specialized equipment to clean and seal surfaces, but you should ask about their process. If mold becomes a concern later, a mold professional may be needed.

• Wear gloves and a respirator during any cleanup
• Ventilate the space, but avoid spreading soot
• Discard porous items that absorbed chemicals
• Have HVAC systems inspected and cleaned
• Wash all salvageable fabrics and hard surfaces
• Monitor for moisture and mold growth afterwards