Hi, Just wondering if anyone has heard anything regarding your environment and how it affects people with CF. I know that my daughter shouldn't be near people smoking, and we try and keep the house dusted as much as possible. I am looking more for information on the area we live in. We are near a train, airport and highway and I wonder if this will have any affects. I've heard there is no proof that this has any affect on cf patients but I can't see how it wouldn't.Thanks,Heather