Multiple wildfires tearing through Los Angeles are pumping toxic clouds into the air, blanketing a vast region with choking fumes. Residents have been advised to stay indoors and wear an N95 mask if they step outside. The fires have reduced homes, businesses, cars, and vegetation to ash. That means plastics, chemicals, fuel, and building materials all went up in smoke, and now hang in the air across a densely populated region. n18oc_world n18oc_crux