Absent an agreement to the contrary with your landlord, it's a fixture and fixtures ordinarily become part of the property.
You should give proper notice of the termination of your tenancy. If you try to avoid paying rent, and your landlord pursues you in court, you can attempt to defend against the claim or counterclaim, but "I think there may have been black mold" isn't a sufficient defense to paying rent.Quoting jvan1474

