Just to clarify air bags do not use exaust from the car. They are powerd by a chemical reaction of NaN3 and KNO3 to make Nitrogen gas. That is what fills up the airbag. If you wear your seatbelt you should be fine against the effects of the airbag going off.
For more info vist
How stuff works: Airbag
HTH,
-C
edit:
200th post whooo
