To what kind of “leprous disease” does the passage refer?
Leviticus 14:34 (ESV)
34“When you come into the land of Canaan, which I give you for a possession, and I put a case of leprous disease in a house in the land of your possession,
The usual Hebrew term ṣāraʿat is used to describe various kinds of fungus within a house. This may refer to things like mould, mildew, or rot. These can be dangerous and must be treated appropriately.
34 “When you come into the land of Canaan, which I give you for a possession, and I put a case of leprous disease in a house in the land of your possession,