Well.Sinus is a disease that attacks and irritates everyone. About 70% of Indian poplulation sufders from sinus. The main factor to prevent suffering from Sinus is prevent youself from going into dusty area. If you suffer seriously, I advice you not to ride bikes and avoid the dust. Secondly I would like to say you about some natural remedy. Leaves of Tulsi are of great impirtance when you suffer from Sinus. Take some tulsi leaves and grind them using water and eat them. It will be tasteless but eat it as a medicine and you will get immediate reliefe from this disease.