Potion of Contagious Laughter

Any creature that enters the pool of the spilled potion of contagious laughter must succeed at a Will saving throw each round or be affected by the equivalent of the hideous laughter spell. Each round while the creature is laughing, all creatures within 15 feet of it that are not immune to harmful vapors must succeed at a Will save or be affected as well. The effect is unstable and only lasts while the creature remains in the pool, and for 1 round while outside it. A creature affected by the pool cannot be affected by it again for 24 hours. Creatures under the effect of the life bubble spell are unaffected by the pool's fumes.