| Flap 1 |
Flap 2 |
| Purulent | Thick, yellow, and sticky bacterial infected white cells. |
| Fetid | Foul smelling |
| Mucoid | Thick and clear, normal for someone who has an airway disease. |
| Muco-purulent | Purulent and Mucoid combined |
| Green | Old infection or infection related to alergies. |
| Green and fetid | Pseudamonas |
| Brown | Old infection |