The reason I ask is b/c we have had chicks in the house since early March. We have been hatching and as they get big enough they get moved outside. They are in a play-pen... we don't have place we can put them other than the house since we don't have any outdoor place accept our coop and there is not enough room for their brooder in there. Anyway, we have not had any problem with having them in the house accept the dust they put off can get annoying but we clean the brooder(playpen) often and vacuum and dust. No one has gotten sick from it. We all suffered from allergies during cedar and oak season and all got better.... here is the deal... My brother-in-law has decided my nephew and niece can not come stay at our house b/c the chicks are indoors. We have 4 wk old bantams in the brooder plus we have eggs in the bator due tomorrow so it won't be stopping anytime soon. He even brought up avian flu as one of the reasons ...something he looked up online since we asked him what was his reasoning. For starters all my birds are very healthy, secondly the chicks came from my outdoor flock which has been p/t tested as well. Thirdly well... no one else is sick, if it was causing a problem I would think my kids would still be sick from the allergy issues when spring started. This is the same person who spouts random chicken knowledge that he thinks he knows like "if you have a rooster the hens will be protective of the eggs" and "one of these days we will crack open an egg with a developing chick" (we collect eggs everyday) I was wondering other chickens peoples perspective.... am I wrong and should be worried? or is this another one of those "things" we have to deal with b/c we have chickens? like the fear of fresh eggs, or chickens are "dirty" ...IMO they are as dirty as any other birds people keep in their homes. They are farm animals and farms aren't generally "clean" we have really had to get used to the lifestyle though like going to rodeo arenas and big barns for shows, everything is dusty! not to mention living on a dirt road, it's just something we have come accustomed to. Mind you these are not the kind of people that keep a spotless house so I am just feeling a little "judged" at the moment.