Emergency responders continued efforts on Sunday to contain a devastating fire at a massive Los Angeles warehouse that has been burning for five days, raising concerns about potential biohazard risks and air quality across the region. The blaze, which began Wednesday, engulfed a 500,000-square-foot facility operated by Lineage Logistics in Boyle Heights, where millions of pounds of frozen meat and bread products have been decaying inside.

The prolonged fire has compromised the building’s structural integrity, with firefighters using large volumes of water to douse the flames. As of Sunday, officials reported the fire was contained to one side of the warehouse, but the situation remains complex and is expected to require sustained firefighting operations.

The smoke from the inferno has spread widely across Los Angeles, reaching areas including the San Gabriel Valley, northwest San Bernardino Valley, and even Dodgers Stadium. Strong winds typical of the LA Basin have contributed to the extensive smoke dispersal. Dodgers manager Dave Roberts described conditions as "a little dark out there, little Gotham City," highlighting the impact on visibility.

Mayor Karen Bass announced measures to protect residents of Boyle Heights, including the distribution of air filters and masks. Voluntary shelters have been opened to aid those affected by poor air quality. Governor Gavin Newsom declared a state of emergency as the South Coast Air Quality Management District issued warnings about hazardous particle pollution associated with the smoke.

While the Los Angeles Fire Department stated that initial air quality tests did not detect additional toxic chemicals beyond expected pollutants, health officials urged residents to remain indoors. Will Barrett of the American Lung Association cautioned that smoke from such fires can contain toxic substances and fine particles that pose serious risks to respiratory health, depending on the fire's materials and conditions.

The presence of large quantities of rotting frozen meat inside the warehouse has introduced unprecedented biohazard concerns. Toxicologist Michael Kleinman noted that decaying biological materials could generate noxious odors and harbor bacterial growth, potentially complicating smoke composition if biological matter continues to burn. He emphasized that such a scenario presents hazards that are "very untested" in previous fire incidents.

The fire has drawn criticism from public figures such as Spencer Pratt, who accused Mayor Bass of neglect, alleging she was out of town attending the opening of Barack Obama’s presidential library in Chicago when the fire began. Bass’s office did not immediately respond to the criticism.

Officials remain focused on extinguishing the blaze and developing plans to safely remove the millions of pounds of spoiled food products within the warehouse. Meanwhile, residents in affected areas continue facing challenges from lingering smoke and potential health risks as emergency teams work to bring the situation under control.