The autowit fresh 1 air purifier is a purifier made to be easily portable between a vehicle and an interior space, making this the best portable air purifier for a car. It has a three-stage filtering system which works to eliminate odors such as cigarette smoke, dust, pollen, and other unpleasant odors, like body odor and food smells. Its automatic air quality indicator detects and indicates the quality of the air surrounding it and alerts you to the status with different colored LED lights. It’s powered via a USB cable which makes it a great choice for your office, and it fits in a car cup holder so you don’t have to worry about where to put it when you bring it with on a road trip. It has a silent mode option, making it a great choice for those who want quiet air purification, especially at night, and it has essential oil/aroma pad allowance for those who want extra scent with their purification, though some users stated that essentials oils ruined or melted the plastic on the purifier. The expected lifespan of the filter is 3-4 months, though it could be less for anyone using it in a space with a high pollution level. Users also stated that the filters were easy to change and that it has no ozone smell, which makes it a great choice for an office setting and the best car air purifier for asthma.













