Viscous Air

Exploration Stage: Foggy Oasis
From: Mr. Black
Description: In addition to the smell of herbs, the air within the sanatorium is permeated with something else. Inhale... Do you feel how viscous it is, although it’s still easy to breathe? You can feel such air more profoundly next to that crystal. I think it’s worth examining too!
Completed: Just as I thought: this crystal is aromatic! Well, maybe not aromatic, but it definitely permeates the air with something. Hopefully, its vapors are not the source of the sleep fever. I’d hate to fall asleep in the middle of an investigation.