USB Aroma diffuser for essential oil only

Ultrasonic aroma anion diffuser is used to circulate essential oils like antibcterial, viral and micro thought the home or office space to fight air pollution and germs. The ultrasonic aroma anion diffuser also act as perfumes and create a motivatin, stimulationg and relaxing atmosphere.http://www.amazon.com/aroma-diffuser-Ultrasonic-Humidifier-Continuous/dp/B00VFCTLTI?ie=UTF8&m=A3LVH2GD1OOIKZ&qid=1459924213&ref_=sr_1_13&s=merchant-items&sr=1-13