Chickens do pee, sort of. The white stuff on chicken poo is the urine. They do not pee a liquid urine like people or most other animals.
You say the smell seems to be only in one place - is that place wet? If so, I agree you need to check for leaks in the roof, or perhaps their waterer is leaking there? If it's not wet and the smell is concentrated where there is heavy poop, I would try to remove as much poop as possible daily - and throw some fresh shavings over that area afterwards.
You say the smell seems to be only in one place - is that place wet? If so, I agree you need to check for leaks in the roof, or perhaps their waterer is leaking there? If it's not wet and the smell is concentrated where there is heavy poop, I would try to remove as much poop as possible daily - and throw some fresh shavings over that area afterwards.