Hey i've been experiencing the same problem..i feel your pain. Its obvious that crambone is uneducated in this topic so I would just ignore him. After many visits to several physicians...countless antibiotics,mouthwashes,nasal rinses, ect...And even a tonsillectomy..I took it upon myself to research online...Your doctors may only be treating a bacteria infection rather than fungal...it is quite possible you have yeast in your sinus and lungs..and even your intestines...I am currently taking Fluconazole 150mg for candida ...ask your physician about lung and sinus yeast infection and see what he says.
Gastropro, have you considered having yourself checked for small intestine bacterial overgrowth (SIBO)? Or have you considered trying a course of probiotics to see if they might be of help? Unless you're immunosuppressed or experiencing pancreatitis, they won't do any harm and could possibly help things. There are some decent 'everyday' brands on the market that include Culturelle, Digestive Advantage-IBS and FloraQ among others.
quit eating curry and brush your tounge once in awhile?