He hears the other trying to stir and grabs the empty syringe and a rubber band before going back out to where he'd left Conan. Did that stop the hallucinating?

"Now don't panic-but you've been affected by the dust. I had to give you a sedative." He kneels down next to the arm chair to get a good look at the boy's face.

"I need to know exactly what it's doing to you-may I take a sample?" He asks gently.