I've wondered about this myself... I wouldn't be surprised if there's a large amount of electromagnetic radiation coming off the motors themselves... much more so than the other examples (eg. home appliances, cell phones, etc) people are throwing out here. Your fridge, coffeemaker, etc isn't running on 400V and up to 1000's of amps when pushed hard. You also aren't sitting INSIDE those devices for hours at a time (in my case) each day...
Having said that, I think the bigger risk is being able to exit the vehicle quickly after a bad accident. The windows are very tiny on the MS and if the doors are damaged to the point where jaws of life are needed you better get the HELL out of the car as quickly as you can. Runaway thermal reaction and 100's of 18650's below your feet can result in you getting an early (and free) cremation
This is by far my biggest concern. The cell chemistry Tesla chose to go with was a trade-off... mass availability (and lower cost/more storage density) balanced with safety/stability of the cells. These little suckers are highly volatile once they decide to give up the ghost and IMO this is Tesla's Achilles heel until they find a safer battery chemistry that can produce similar performance characteristics at the same price points as today's.
Yes, gas cars catch on fire too... but 18650's explode and catch on fire in a very different way.. Many first responder-types are still getting used to the procedures/protocols they'll need in place to handle EV car fires. Not only do these things catch on fire easily, but they'll re-ignite after being put out too. Hopefully well after you're out of the car :-o
In a nutshell, I frequently remind my wife that if we ever get in a bad accident get out of the car as quickly as possible... especially if you hear hissing or smell anything funny... and stand way back after you get out
All it takes is one cell (and there are hundreds) that decides to go thermal and it could take the whole pack with it. Tesla has put safeguards in place (fusing, etc) to hopefully reduce this but it can still happen.
Having said all that I do think the MSM is now starting to attack Tesla seemingly out of nowhere. It seemed to start right around the time Elon had that back and forth exchange with the cave diver guy... Makes me wonder if Elon struck a nerve with the cabal.. but I digress, the one thing about a Tesla fire is it's like fireworks and very dramatic... and we know the clowns in the MSM LOVE DRAMA much more than FACTS