(1) If the dwelling unit or premises are damaged or destroyed by fire or casualty or so injured by the elements, act of God, or other cause to an extent that enjoyment of the dwelling unit is substantially impaired, the tenant or the landlord may terminate the rental agreement upon fourteen (14) days' notice; however, the tenant may immediately vacate the premises.
(2) If the rental agreement is terminated under provision of this section the landlord shall return all the unused portion of the prepaid rent. Accounting for rent in the event of termination or apportionment shall be made as of the date of the casualty.