"Ladies and Gentleman, Children of all ages! Welcome to my Carnival! You will see sights to behold, and things beyond belief! Some may frighten you, and some may shock you, but its all in good fun! Please, stay a while…and watch."
Diseased people, (leprosy or any other such fear inducing disease) when traveling, will often times wear a cloak that entirely covers their body and ring a bell as they travel, used as a warning for any others to stay away. Could be used for a disguise or safe passage. ... you meet strangely cloaked people, sometimes ringing a bell. "Please give us something to eat, mighty heroes!" This is time to show how good they are.