Portable Air Purifier Showdown: True HEPA Tested For Odors... Gray Maneuver In Car Tech We were intrigued by the Car Air Purifier with H13 True HEPA Filter, especially its promise to combat exhaust fumes, VOCs, smoke, and odors with 99.9% removal down to 0.1 microns. Our tests confirmed its effectiveness, particularly during city drives where pollution can be intense. The grey design blends seamlessly with most dashboards, making it less intrusive. The filter performance impressed us, especially for lingering smoke smells. While it's marketed for cars and travel, we found it surprisingly quiet and fitting for our bedroom too. The portability was a plus, though the USB charging might limit runtime on longer trips. Overall, it’s a solid contender for anyone seeking cleaner air on the go.