Inert Compressed Gases

Inert gases are non-combustible, non-flammable, and non-reactive to many materials.

Inert gases also displace oxygen and can produce a localized oxygen-deficient atmosphere, and therefore should not be used in enclosed or confined spaces without proper ventilation and/or respiratory protection.
Some inert gases are also cryogenic in their liquid state.
Inert gases are odorless, colorless, and tasteless - making them even more dangerous because they cannot be detected by a person's senses.
Always check for leaks and ensure equipment is in proper working order.