No, it is right.
Sorry what?
Diseases appeared in Europe precisely with the development of science, when scientists decided that it is harmful to wash. When washing in the skin get harmful "fluids" (or something like that). People stopped washing.
The fact that bathing was forbidden by the church and science here is inappropriate. Did the witches even calculate that they were washing? The witch!
Scientists were considered husbands at that time. And those scientists who, in the modern sense, could be considered heretics, with all the consequences.