There have been a couple recalls with LG batteries that had the potential, but AFAIK the number of times it happened is very low, and again more likely to happen with ICE cars. They tend to err on the side of extreme caution with EV batteries.

Lithium fires are for sure harder to contain, and I won’t deny that not all Fire Departments are equipped. There is special equipment needed, but once you have that it becomes much less of an issue. As far as fumes, I don’t know which is worse. There are a lot of nasty things in both EVs and ICE cars. I’ll have to look into it.