Mines an Australian built 96 ES with twin airbags (First 4wd with driver and passenger airbags according to the sticker still on the back window).
The propellent in airbags is sodium azide which is fairly stable and would degrade over time to nitrogen gas I believe. It will not form less stable forms like other explosives.
The concern I have is more over the 20 year old wiring and possibly the ignitor circuit.
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