- Wildfire smoke contains harmful fine particles that can penetrate deeply into the lungs and gases like carbon monoxide, benzene, and other pollutants.
- Vulnerable persons—the elderly, infants, asthmatics, those with respiratory disease—are most at risk, and smoke can be carried far, affecting populations distant from the fire zone.
- The impact is not only respiratory; particles can enter the circulatory system and trigger diabetes, stroke, or heart attack.
- Firefighters face risks from smoke inhalation and also from contaminated equipment, heat stress, dehydration, and fatigue.
- Wildfire smoke is deadly: The Lancet estimated 154,000 deaths globally in 2024; Oxfam estimated 2,800 early deaths yearly in France.
- Protective measures include FFP2 masks, staying indoors, shutting windows, and placing wet cloths over vents.
Wildfires in France and Spain have ignited serious health concerns regarding toxic smoke exposure, particularly for vulnerable populations.
Experts emphasize that fine particles from wildfires can penetrate deeply into the lungs, posing significant risks to those with pre-existing health conditions.12
Bruno Crestani, head of France's Respiratory Health Foundation, stated, "Especially at risk are vulnerable persons -- those who are old, or who have a respiratory disease, or infants, or asthmatics -- because this (smoke) can unbalance a situation that was previously under control."345
The impact of wildfire smoke extends beyond immediate fire zones, as these fine particles can be carried by wind, affecting air quality in distant areas.910
The French Prime Minister Sebastien Lecornu has responded to the crisis by promising to send 1.5 million FFP2 masks to the Gironde region, where wildfires have been particularly severe.111213
According to a report by The Lancet, exposure to wildfire smoke led to an estimated 154,000 deaths worldwide in 2025, attributed to fine particulate matter. In France alone, Oxfam estimates that wildfires contribute to 2,800 early deaths annually due to air pollution.
The French health agency Anses has advised residents in non-evacuated zones to limit outdoor activities and keep windows closed to mitigate exposure to harmful smoke.
As the situation evolves, the long-term health implications of wildfire smoke continue to be a pressing concern for public health officials.
“Fine particles from the smoke can penetrate deeply into the lungs, with vulnerable persons — including the elderly and asthmatics — at highest risk. A Lancet report estimated 154,000 deaths globally from wildfire smoke in 2024, highlighting the severe health impact.”
