Apparently fire and air bags do not mix.
Sodium Azide (2 NaN3 ) is used to inflate the bag. It does not like heat and goes bang at 300 °C. It then breaks into Nitrogen and Sodium. We also know that Sodium and Water do not dance well together and we end up what we see in the video.
And now you know you are driving around with an explosive device aimed at your face. Have a good day.