Which of the following is a major hazard of smoke produced by upholstered furnishings?

• A. Only heat.
• B. Ozone depletion.
• C. Toxic gases like CO and HCN, irritants, and fine particulates.
• D. No hazards.

Answer: (C)

Smoke from upholstered furnishings is mainly dangerous because of what you cannot see and smell: inhalation hazards from toxic gases, irritants, and fine particulates. When polyurethane foam and synthetic fabrics burn, they release a mix of gases such as carbon monoxide, which steals oxygen from the blood, and hydrogen cyanide, which interferes with the body's ability to use oxygen at the cellular level. Irritants in the smoke irritate the eyes, throat, and lungs, making breathing painful and provoking coughing or bronchospasm. The fine particulates fill the lungs and can cause serious respiratory and cardiovascular stress, especially in enclosed spaces where concentrations rise quickly. Heat is a hazard too, but the most dangerous aspect of this smoke is the inhalation toxicity and airway irritation it creates. Ozone depletion isn’t a relevant factor here, and the idea that there are no hazards is incorrect.