Hypertonic Saline helps cut thru the crud. Was discovered in Australia by parents of CFers who surfed. Breathing in moist salt water air helped them breathe deeper, cut threw the thick mucus in their sinuses and lungs, helped them to cough up and out that stuff, reduces the number of infections and hospitalizations... Patients have been shown to have increased lung capacity, increased pfts...
My mom uses it for her sinuses and for her asthmatic bronchitis. Reduces inflammation and swelling. Cuts thru the mucus and helps her to move it up and out.