This lady has a phenomenon called “recirculation” in which the flow of the mucus is blocked from reaching the “natural opening” and thus recirculates around the opening instead of draining properly. https://www.theboogerbandit.com
A nasty bacterial infection was found in the left maxillary sinus. This poor soul had had multiple sinus surgeries, but at least the sinus was accessible for the Booger Bandit to do his job. The infection was cleaned out and remained clear after culture-directed antibiotics.