Just like any other pet Chicken only smell bad if you don't clean them up often enough, or if they are crowded. Some people keep cats and you can't smell the cat, other peoples whole house smells like cat... I can't smell my chicken unless I have my face right near the bedding. And I do the deep litter method.
Amonia is bad for chickens, and you should never ever smell a strong amonia smell.
Amonia is bad for chickens, and you should never ever smell a strong amonia smell.