Kaintuck,
My lung and sinus problems caused by wood dust resolved when I started using a P100 breathing mask which I bought from a store supplying equipment for auto body paint shops. Using it, all odor of wood dust, metal grinding, and smoke is completely blocked and my cough and sinusitis clear up. the mask is comfortable, easy to breath through, and puts the fun back in my shop. It will not seal over a beard, however.
Bill Paton