I got two new chickens this weekend. 1 was kind of stinky, but I was thinking because it came off a farm. I figured once I got it home and dusted it, it would be better. After 2 days, the chicken was still stinky. Smells like trash or fish. I gave her a bath, but she is still stinky. Could this be some kind of illness? She has been mixed with my other 5 hens, so I want to treat her as soon as possible if she is ill.