Find an empty room and examine the vials there
From Create Your Own Story
You don't want to get caught, but you don't want to go outside and risk running into vampires, either. You find an empty room down the hall, then seat yourself at a table and place the vials in front of you. You open the one with the pink powder and shake a little onto the table. There doesn't seem to be anything special about the substance.
You then open the other vial. As the black substance spills out, you smell a foul odor. Then it makes contact with the pink powder and there is an explosion - for you, a fatal one.
YOU ARE DEAD