I already cleared the HalluciGen, Inc. building, and ended up picking up all the HelluciGen Gas Canisters on my way out. I stored them in my Sanctuary, and only recently noticed that there's a quest marker in Sanctuary that reads "Bring a HalluciGen Canister to Fred Allen".
The only problem is, the gas canisters are marked as "Junk" and so I've already accidentally used them when crafting something. There's none in my inventory nor my workshop. I also can't get HalluciGen, Inc. bulding to respawn (however I'm pretty sure items that aren't in containers don't respawn anyway); I've slept a week and a half in game, after at least 2 weeks have also passed since I cleared the area out, and it still has the "CLEARED" tag.
Is there really no other way to get these cans? I mean, the quest aside, these cans are required for crafting HaluciGen Gas Grenades...Did they really not think about the fact that the player could only craft up to 8 grenades total when they programmed this?
Anybody know if there's any solution?
Please think about how to avoid this problem in the next patch.