Best Car Air Freshener Purifier Ionizer Deodorizer (Red) Neutralizes Pet Odors and Cigarette Smoke Odor. Portable Car Air Freshener Purifier uses advanced technology to achieve air purification. Portable Car Air Purifier can Remove smoke, dust and air pollutants, Eliminate unpleasant smells Kill harmful viruses & bacteria Increase concentration, relieve tiredness and car sickness. Car Ionizer Air Purifier can be used in cars by plugging it into car cigarette lighter. While the device is in operation, the LED light is on. To switch it off: Unplug the device. Car-Ionizer uses an electrical charge to produce stream of negative ions which then remove microscopic particles from the air, improving the air quality in your car. The ionizer creates negative ions which seek out positively charged particles, such as dust, dander, bacteria, pollen, mold, smoke, chemical vapors, and other allergens. Once the positive and negative ions are bonded together, they become too heavy to float, and no longer affect the air quality of the surroundings.