This might also mean you need different antibiotics to your usual. The solid gel layer acts as a physical barrier to most pathogens and the constant flushing movement prevents the establishment of bacterial biofilms. The nose produces over millilitres of mucus a day and the lungs produce approximately 50 millilitres daily. When we carried out some research into fatigue in bronchiectasis we found that people with more symptoms of breathlessness tended to have more problems with fatigue. The mucus carries with it dead cells and other dust and debris, ending up in the stomach for recycling.
The solid gel layer acts as a physical barrier to most pathogens and the constant flushing movement prevents the establishment of bacterial biofilms. Patients with green sputum are prescribed antibiotics three times more often than patients coughing clear sputum. Orange and brown comes from the presence of blood in mucus, of variable concentrations and ages. Mucin droplets absorb water and swell several hundred times in volume within three seconds of release from mucus glands.