The followers of the mechanogod Whrrrm, those who could never have come about until the advent of steamtech.
And because they had shown they could not be trusted, Iev abolished the use of Kren save by those few individuals he trusted.
~The True History of the Order, by F’ian circa 300 AW
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.