Here’s what we do, and don’t, know about what’s in the smoke from the Boyle Heights fire

A refrigerated warehouse in Boyle Heights operated by Lineage Logistics has burned for nearly a week, releasing smoke containing toxic pollutants like foam insulation, wood pallets, and plastics. Public health officials warn of heightened health risks due to high levels of toxic organics and metals, but specific toxin monitoring remains limited. Authorities and researchers emphasize the need for precautions like air filters and masks.