I wasn't challenging what smog is. I was pointing out that LA air quality no longer suffers from smog like it did in the 1970s. Any hazy skies around LA are now

I wasn't challenging what smog is. I was pointing out that LA air quality no longer suffers from smog like it did in the 1970s. Any hazy skies around LA are now more a product of dust in the air and not vehicle emissions.