Bubonic Belch

You open your mouth and spew a cone of disgusting poisonous slime. Each creature in a 15-foot cone must make a Dexterity saving throw. A creature takes 3d6 poison damage and is infected on a failed save, or takes half as much on a successful one. The infection lasts for 1 Hour. When a non-infected creature gets withing 5 feet of an infected creature, they must make a constitution saving throw, taking 3d6 poison damage and becoming infected on a failed save, or half as much on a successful one.