I am planning to put a woodburning insert into my masonary fireplace once i find a good used one. I have mild to moderate allergies. When we have an occasional fire in our open masonary fireplace I get a little stuffy. With a airtight insert i am assuming my reaction would not be a "bad" due to the fact that the allergens would not be open to the room while burning. Anyone with allergies have any experience or advice. I know when i empty the ashes I might need a mask or something.