Are chickens noisy and smelly?

Chickens are a bit noisy in my opinion, but it shouldn't be too bad where you will be bothered by it from inside the house. Keeping the coop clean is really the big difference between smelling bad and not. It will probably require more maintenance than average house hold pets, but that's with most farm like animals. It also will depend on how many chickens you get since more chickens means more noise/more mess to clean.