If your EV's battery goes bad, will it be less likely to catch on fire? Or more likely?

There's a reason why you want to park that outside and not in your garage...

its like cyanide

The stories I saw had text like this:

'According to officials, “nothing unusual” happened before the Tesla’s battery compartment “spontaneously caught fire.”'

BTW, firefighters use 6,000 gallons of water to extinguish the fire! Where did all that water go, and what kind of chemicals were in it?!