Dangerous scent

Exploration Stage: Bamboo Grove
From: Detective
Description: That vindictive spirit apparently thinks it was her husband who killed her. Funny, my head is starting to hurt! I smell something weird. Is that what's causing it? Hey, the fog has lifted over there. I think the city is telling us to look there.
Completed: It's like a choking aroma. It's extremely dangerous. This odor is made from toad mucus, which is said to cause headaches and paralysis. If he used this to kill his wife, the man must be quite a scoundrel. But... the woman's spirit is shaking its head!