J Miller, what tessagin said. I remember your recent bout with some kind of illness. DH and I live in an OLD remodeled farmhouse, and it nearly drives our younger ones crazy with worry about us, and the coughing and sneezing that we do. They swear it is the old mildewy building stuff in our walls, even though we have them sealed off with pink stuff and wall board (whatever you call that white stuff you paint for your walls and ceilings)--and some kind of "very expensive" linoleum on our floors; new windows, etc. as we did all the remodeling.