Or, maybe the idiotic Olympic committee could have chose a better place.
"Many other ideas surfaced in the 1950s and 1960s to purify, ventilate or wash the air over Los Angeles.
One was to cut holes in the mountains and install huge exhaust fans to blow smog out of the basin. However, blowing or washing away smog proved to be impractical since it involved a land mass of 1,600 square miles and over 200 million tons of air. The enormous energy requirements made the idea impossible."
http://www.aqmd.gov/news1/Archives/History/weird.html