The HalluciGen Gas Canister is a junk item in Fallout 4.
A cylindrical metal canister containing green HalluciGen gas. It can be used to craft HalluciGen Gas Grenades.
- Nine can be found at HalluciGen, Inc.
Since the canister can be scrapped for one unit of steel, it can be scrapped unintentionally while using a workshop or any other workbench. This can be avoided by not storing the items in a settlement's workbench inventory, or reviewing the list of scrapped items when building in the settlement.