There was the entire month of October 1954 in Los Angeles, when the worst in a string of smog attacks blanketed the region. Planes were diverted from airports. Children stayed home from school. Over 2,000 automobile accidents occurred in a single day. Two years later, a survey of L.A. doctors found that almost 95 percent had treated the “smog complex”—irritated eyes, cough, nausea, and headaches.