Cools Off and Disappears! (冷やせば消える！, Hiyaseba Kieru!, lit. Cool and Disappear!) is an event in Tomba! 2: The Evil Swine Return.
Find a way to extinguish the flames on the Cappers.
Activate the event by talking to the man next to the first encountered save sign.
After getting the Ice Boomerang, use it on a Capper to clear the event.