US Patent 12083077 Vaporizer mouthpiece

A hygienic mouthpiece cover that is easily removed between sampling by users and is made from a recyclable biocompatible material is provided. Example embodiments of a mouthpiece cover includes an inlet, into which a vaporizer cartridge can be inserted, an outlet that a user draws vapor from, and a saliva transfer inhibitor that includes a guard physical barrier between the outlet and inlet to prevent saliva transfer to the cartridge, a saliva reservoir, and one or more draw holes of a number and size that vapor can pass through unrestricted.