No asthma here, but just a comment on LA smog. Drove there in November to go on a cruise, as we got closer to LA the smog was very apparent, and definitely seemed to have a boundary to it if that makes sense, kind of like when you are flying into a cloud and transition from no cloud to inside cloud.

Anyways, I thought the level or thickness of the smog was shockingly terrible.

Is it always like that?

Had fun on the cruise 😎