Modified exit bag

[WeepingWillow]

So I'm sure everyone is already familiar with the peaceful pill exit bag. In case not its just a bag placed over one's head with elastic around the neck to minimize leakage and filled with inert gas. Anyway my idea was to use dust off/compressed "air" computer duster instead of some complicate helium/nitrogen rig.

Any thoughts on this? Does anyone see any potential flaws with this idea? It's the most accessible option I've got. Thanks