Notwithstanding any provisions of law to the contrary, no person who without remuneration provides assistance upon request of any police agency, fire company, first aid, rescue, or emergency squad, or other agency or unit of government in the event of an accident or other emergency situation involving the use, handling, transportation, transmission, or storage of liquefied petroleum gas shall be liable in any civil action to respond in damages as a result of his or her acts of commission or omission arising out of and in the course of his or her rendering in good faith any assistance. Nothing herein shall be deemed to grant any immunity to any person who caused the accident or other emergency situation, or to any other person causing damage as a result of his or her willful or wanton act of commission or omission.