Technology has made great advancements in the past 20 years and has achieved shrinking many components to that extent where a device that could only exist in a home, now is portable and can be carried everywhere. Like the dodocool USB Car Humidifier that gives you a pleasant atmosphere while traveling.
Using ultrasonic technology, it runs quietly and effectively and emits cool mist to refresh the air in your car. With a few drops of essential oil, and it can emit fragrances/scents to your car and make driving more enjoyable. Also, besides adding 3-5 drops of essential oils to turn it into an essential oil diffuser, you can use water to use it as a humidifier. Via ultrasonic technology, it oscillates and decomposes water into cool mist molecules and adds moisture to the air while the fragrance of essential oil can effectively cover up odor, smoke, allergens, and harmful pollutants.
The car humidifier just got a price drop on Amazon and you can get it 30% cheaper using coupon 2JPBUZEK during checkout.