Has there been much talk about shop dust and emphysema??? I, for one, have ben a bit careless about using my dust collection system. I use it when I'm sanding but I tell myself that green wood has no dust....until the sun ray catches the dust particles in the air. Oops. Mistake. I just had a chest CT recommended by my physician because I complained of coughing at night, really being afraid that my history of smoking for more than 25 years had caused cancer.... So I was told today that I do not have lung cancer, but I do have emphysema. So I bought a comfortable dust mask rated at 100% at my local Woodcraft. And I will follow up with my doc to see what else I can do to keep this from being worse. I am 68 y/o and wonder how the rest of the wood turning community is dealing with this potential hazard of our passion of turning.