Aromaster Whifferpuff "Gold"

Usage
The device has four scent settings:

These enhance what is already present. For example, if your Sim runs the juniper and rosemary setting, then goes to sleep, the Energy refresh goes up by 3.

It costs §150 per use. One use lasts for 3 hours.

You can install multiple devices.

The Sims (console)
The Aromaster is unlocked during the first mission of the Get a Life storyline. To unlock it, your Sim must make a meal without starting a fire.

The Sims Bustin' Out (console)
To unlock the Aromaster, your Sim must be promoted to All-Star in the Jock career path (career level 5), at Toane's Gym.