In my country, growing species of mushroom - Amanita muscaria - (fly agaric),and is one of the poisonous mushrooms, but not deadly as Amanita phalloides..Fly agaric-contains- muscimol (halucinogen/psyhoactive),and, one of the symptoms are hallucinations ,and also cause vomiting, confusion and sleepiness,also,contain biologically active agents- Ibotenic acid, a neurotoxin... and together with other agents, can be dangerous ,because it can cause stoppage of the respiratory system..among others.