env_gascanister

This entity is not in the FGD by default.
See below for instructions on making it available.

Flying gascanister

env_gascanister is a point entity available in Counter-Strike: Global Offensive. It's one of many new entities added with the Danger Zone update. env_gascanister launches from info_gascanister_launchpoint in Danger Zone game mode. After landing this entity doesn't disappear.