What should I do? Way back then, once your survivor was able to give mutagens to NPCs, I remember getting the NPC to hit the cattle mutation threshold as a test.
Now, I can't seem to do it. They take their mutagen just fine, but if I try to give them the serum (with a syringe given to them via trade) they seem to think that I'm giving it to them as a weapon and would not consume it.
If I use debug to spawn a serum in the inventory without a container, then give that to the NPC, they take and use the serum, so what gives? Is it due to the containers behaving oddly or something with serum?