GaylordWilshire
Perhaps smog did play a role in 'film noir'.
Below: Smog in Los Angeles 1947.
usc digital archive
Below: More smog in 1947.
usc digital archive
Below: More smog in 1948.
usc digital archive
Below: Again.....smog in 1948.
usc digital archive
Below: Two unidentified men pointing at the smog in 1948.
usc digital archive