Disarming Inhalation

Exploration Stage: Antique Store
From: Alford Stone
Description: I have a remedy that takes magical powers away from evil creatures! You’ll see how it works on the alleged filmmakers. I’ve read a pile of old books about witches, where I found a recipe for making a dispelling potion. It’s among the books somewhere, can you help me find it?
Completed: You’ve found the dispelling potion! Even though I disguised it so cleverly... But the evil witches probably didn’t even know that I had it. Now look: when the witch inhales the vapors of this potion, she will collapse, powerless. She still stands? We need to wait.