Bubonic Belch

2nd-level evocation
Casting time: 1 action
Range: Self (15-foot cone)
Target: Each creature in the 15-foot cone
Components: V S
Duration: Insstantaneous
Classes: Warlock, Bard, Druid
Subclasses: --

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