Disclosed is a device and method for diffusing a therapeutic specific to a user's emotional/mental state (EMS), comprising the steps of: selecting (or assessing) at least one EMS, said selected (or assessed) EMS indicating at least one of an emotion, mental, and/or physical state of the user; and activating the ultrasonic membrane of the at least single reservoir (optionally, a plurality of reservoirs) housing the mist specific to the selected/assessed EMS, wherein said activation results in a vibration of the membrane causing an ultra-sonic frequency resulting in the atomization and diffusion of the prescribed mist based on the user-selected (or assessed) EMS.