question: Thick phlem enveloping vocal chords which limits voice volume and pitch to a low growl. Clear lungs and normal blood work. Acid reflux has been canceled out as has cystic fibrosis, copd, and chronic bronchitis. I cough up micuous thick and sticky enough to bind a popsicle stick house. It varies in color, including black. Advaor had no affect, nor has a netti pot or expectorant and 4 rounds of antibiotocs. Only thing that has not been attempted is a nebulizer. Any ideas?