Zoom

Zooms are blue mushrooms that, when consumed, will cause Ghost to enter an hallucinatory state, where he can fly around the island. When the effect ends, Ghost will vomit.

Zoom spots
There are three Zoom spots in the game: one at the Hangar, one at the left of the Comms building, and one at the apartment complex at room 206. After hitting every Zoom spot the player will get the Zoomhead achievement.