After the Fire: How to Protect Your Lungs

Fires can leave behind more than visible damage. The lingering smoke and airborne contaminants from the recent warehouse fire in the Boyle Heights neighborhood in Los Angeles may continue to affect air quality for weeks or even months. Exposure to pollutants released during the fire and after it was extinguished can significantly increase the risk of developing respiratory problems and other health issues.

While some people experience only temporary irritation, others, especially children, older adults, and those with underlying medical conditions or breathing issues, may face more serious or long-term health effects.

The Cedars-Sinai Newsroom recently spoke with Irina Dralyuk, MD, director of Pediatric Pulmonology at Cedars-Sinai Guerin Children's, about the health risks associated with fire and smoke exposure, who is most vulnerable and what people can do to protect themselves.

What are the health dangers following a fire like the warehouse fire in Boyle Heights?

Following a fire, air quality can be affected for an extended period of time. Fires release a variety of chemicals and fine particles into the air, and many of those substances may not be immediately identified as materials continue to burn and break down.

The first few weeks after a fire are generally the most concerning, but people should remain cautious for at least two to three months. For individuals with respiratory diseases, weakened immune systems or heightened sensitivity to environmental pollutants, the health effects can last much longer, potentially up to a year.

Who should be especially cautious following a fire?

Several groups are at higher risk, including infants and young children, especially babies born prematurely, older adults, people with weakened immune systems, and those with chronic lung conditions such as asthma, chronic obstructive pulmonary disease (COPD) or cystic fibrosis.

However, even people with healthy lungs should take smoke exposure seriously. Environmental hazards from a fire can trigger inflammation or respiratory problems in otherwise healthy individuals, so everyone should take steps to protect themselves when air quality is poor.

What precautions can people take after a fire?

One of the most effective ways to reduce exposure indoors is by using air purifiers. It's important to choose a purifier that's appropriately sized for the room and to replace filters regularly. Home HVAC [heating, ventilation and air conditioning] filters should also be changed according to manufacturer recommendations.

If possible, limit activities that bring smoky outdoor air into the home. During periods of poor air quality, consider using fans instead of air conditioning, as it typically draws outside air into your living space. When spending time outdoors, wear a well-fitting mask on days when air quality is poor, especially during the weeks and months following a fire.

When should people seek medical attention?

Even mild symptoms such as an itchy or scratchy throat, irritated eyes, or persistent coughing are signs that smoke may be affecting your body and should not be ignored.

People experiencing coughing, wheezing, shortness of breath or difficulty breathing should see a doctor or head to an urgent care. Depending on the symptoms, a doctor may recommend diagnostic tests such as a chest X-ray or lung function tests. Your doctor might also listen to the lungs and determine whether medications, including inhalers, nebulizer treatments or oral medications, are needed to reduce inflammation, open the airways and improve breathing.

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