Editing Poison fog

'''Poison fog''',<ref>{{cite|author=Musa, Alexander, and Geson Hatchett|title=''Super Mario 3D World'' PRIMA Official Game Guide|page=167|date=November 22, 2013|publisher=Prima Games|language=en-us|isbn=978-0-804-16249-4}}</ref> also known as '''ash''',<ref>{{cite|author=Stratton, Steve|title=''New Super Mario Bros. U'' PRIMA Official Game Guide|page=192 and 193|publisher=Prima Games|language=en-us|date=November 18, 2012|isbn=978-0-307-89690-2}}</ref> appears in the [[Super Mario (franchise)|''Super Mario'' franchise]] as an obstacle normally taking on the appearance of an enormous red-and-black cloud. It travels to the right very slowly. Its purpose is likely based on {{iw|wikipedia|volcanic ash}}.

Ash first appears in the ''Super Mario'' franchise in ''[[New Super Mario Bros. Wii]]''. It appears in [[World 8-1 (New Super Mario Bros. Wii)|World 8-1]] only. Ash makes the player lose a life instantly upon being touched. However, neither the [[volcanic debris]] nor the [[Buzzy Beetle]]s are affected by it.

Poison fog appears as an obstacle in ''[[Super Mario 3D World]]'' and ''[[Super Mario 3D World + Bowser's Fury]]''. Instead of moving right, it moves down. It also appears to generate electricity in this game. Like in past appearances, it will make the player lose a life if they touch it, regardless of whether or not they have a power-up. It appears only in [[Trick Trap Tower]], where once it reaches the bottom, it sinks into the [[lava]], causing it to rise. It appears when the [[Key Coin]] at the top of the tower is collected.

In ''[[Paper Mario: The Origami King]]'', poison fog appears in [[King Olly]]'s third phase; here, if [[Mario]] takes too long to unshuffle the [[Magic Circle]], that would result in a [[Game Over]].