chickenguru has answered your question at “Can I eat my sick chicken?“:
Most chicken diseases cannot pass to humans. You can slaughter it for human consumption. Look out for sick parts though and dispose of them appropriately to rid the disease of your farm.
That said, what is the nature of Kung’orota? Is it nasal or mouth? If it is from mouth they could be worms. In which case you might want to deworm the entire flock. Deworm range chicken every two months alternating between types of medicine