Videos of motorhomes on fire
remind us to:
a) keep fire extinguishers handy and know how to use them, and
b) plan escape routes and processes
so in case of trouble everyone gets out safe.
Part 'b' takes more than casual thought, and you have to discuss things fully with anybody else who uses the rig with you. An actual drill is a good idea, including where are the toad keys (and other necessities in emergency), and suppose the fire is where you keep those keys, etc.