Qing Bi Tang is one of the most commonly used herbal formulas for treating sinusitis, rhinitis and sinus infection. It clears nasal obstruction caused by damp heat: stuffy nose, yellow and sticky nasal discharge, sneezing, headache, itchy nose and throat, decreased sense of smell and energy level, and fatigue.
Diagram of the nose and the nasal cavities. Image sourced from Wikimedia Commons. Available here.