(c) No landlord shall offer for rent a dwelling unit that the landlord knows or reasonably suspects is infested with bed bugs. Before renting a dwelling unit, a landlord shall disclose to a prospective tenant whether the unit the landlord is offering for rent or any contiguous unit of which the landlord is an owner, lessor or sublessor is currently infested with bed bugs. Upon request from a tenant or prospective tenant, a landlord shall disclose the last date on which the dwelling unit being rented or offered for rent was inspected for, and found to be free of, a bed bug infestation.