Filmy is a related term of smoggy.
As adjectives the difference between filmy and smoggy
is that filmy is resembling or made of a thin film; gauzy while smoggy is having smog.
filmy
English
Adjective
(er)
Resembling or made of a thin film; gauzy
Covered by (or as if by) a film; hazy
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smoggy
English
Noun
(Smoggies)
(Northern England, Geordie, Northumbria, pejorative) A person from Middlesbrough.
Usage notes
Originally considered to be offensive, but more recently has been adopted by the people of Middlesbrough when referring to themselves and in this context is no longer considered offensive.
English informal demonyms