As wildfire smoke events become more frequent and widespread, public health officials are updating guidance on the health risks of smoke exposure for restoration workers and homeowners in affected areas.
Wildfire smoke contains a complex mixture of fine particles, carbon monoxide, volatile organic compounds, and other toxic substances that can cause serious health problems with acute or chronic exposure. Fine particles in wildfire smoke can penetrate deep into the lungs and enter the bloodstream.
The health effects of wildfire smoke exposure range from irritation of the eyes, nose, and throat to more serious conditions including aggravated asthma, reduced lung function, heart attacks, and stroke. Long-term exposure to wildfire smoke has been linked to increased risk of respiratory and cardiovascular disease.
For restoration workers who work in smoke-affected structures, proper respiratory protection is essential. The CDC and OSHA recommend N95 respirators as a minimum level of protection for workers in smoke-affected environments, with higher levels of protection required for more heavily contaminated areas.
Homeowners returning to smoke-affected structures should have the structures professionally assessed and remediated before re-occupancy, as smoke particles and toxic compounds can persist in building materials, HVAC systems, and furnishings long after the visible smoke has cleared.
