More than 100,000 acres of Northern California forest is on fire, and 40 people have died, according to news reports.
Because of the increased risk of exposure to wildfire smoke, state-run Cal/OSHA has released special guidance for employers.
Smoke from wildfires contains chemicals, gases and fine particles that can harm health, the agency cautioned. The greatest hazard comes from breathing fine particles, which can reduce lung function, worsen asthma and other existing heart and lung conditions and cause coughing, wheezing and difficulty breathing.
One recommended measure…