Do not do it! My relatives have endured lung disease from our small chicken house (less than 30 hens) in the '60s, and also one has an eye disease that has been associated to chicken dust and is nearly blind.
They are second hand chickens - not sure how old they are. But they aren't young by any means. I've had them a couple of years. They are still producing well though most of the time.
Do all chickens lose their feather when they moult. Mine have not loss feathers but seemed to have moulted. No eggs for a few weeks, but didn't lose feathers. They are buff orpingtons.