@ giraffeears- If your sinus pain is related to dust or particulate, I can recommend a good treatment. A Neti pot works great to relieve sinus pain. A Neti pot is essentially a miniature teapot that you use to flush your sinuses. You can buy little packets of nasal salt to mix with warm water and use in your Neti pot. I use it about once a week just to rejuvenate my sinuses. You should try a Neti pot it might help.