I've done some searching here,
some seem lucky = only 3 weeks for clear phlegm

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others = took a year for clear spittle
i'm talking about the stuff you can cough up (Sputum) ..from the depths

still surprises me after workout or hard work in the heat to see the black/grey flecks.....Day 40 for me.
can't wait to see it clear again but am prepared for it to last maybe a year.......

thought i'd start a post just for that to be tracked...maybe others will chime in

Thanks!

FYI, wiki entry...copied
Phlegm /ˈflɛm/ is a liquid secreted by the mucous membranes of mammals.
Its definition is limited to the mucus produced by the respiratory system, excluding that from the nasal passages, and particularly that which is expelled by coughing (sputum).
Phlegm is in essence a water-based gel consisting of glycoproteins, immunoglobulins, lipids and other substances.