There is a fairy newly acknowledged condition called "dry bronchiectasis" where little or no mucus is ever coughed up during airway clearance. So far the recommendation is to continue with airway clearance, especially using saline, to keep whatever mucus that is in the lungs mobile. It is when it accumulates that bacteria get a chance to set up housekeeping.

What does your pulmonologist say about this?
Sue

@ncalvan

Hi, congratulations! I found "chest therapy" (aka respiratory therapy) was invaluable in helping with airway clearance "technique". I went from "dry" to being able to clear enough mucus for good samples which cultured positive for MAC.