So I'm bout to start on a big wall project in my Jeep (23 cubes gross) and will be going through 5 sheets of MDF to get all my cuts...and there are gonna be LOTS of cuts. I have pretty bad allergies to even minor stuff like pollen, and MDF sawdust always kills me. I always do my cutting outside, but I still have problems. With my last few boxes I've built for me and my friends I've just been using those cheap disposable paper filter masks, but I still always end up with congestion, itchy eyes, etc. I'm assuming using an actual respirator with replaceable filters would probly work out better, and I would definatly invest in one if it were to help me out with my allergies. Does anyone else use these when working with MDF/any other sorts of wood when building their boxes?