Yes, this is typically fungal-related and in Chinese medicine they call it a “damp condition”. It could be related to mold spores as well. This program is comprehensive enough to “dry” out that condition and restore order. Plan P covers everything. If you still have sinus issues afterward, look into taking Sinatrol by Orthomolecular. I’ve had great success with that product doing the “finishing touches” after a cleansing program. The oil pulling will help the microbiome of the mouth, and gargling with essential oil will be great too. If there is an infection in the mouth, it could affect the sinuses. Another path is to use a neti pot with an anti-pathogenic essential oil diluting the water to clear the sinuses.