Abstract: An air filtration system for vehicles, aircraft and spacecraft includes a filter element for filtering air passing through an air vent thereby cleaning the air of toxic substances such as smog, exhaust fumes, noxious gases, diesel fumes, asphalt odors and many other combustion odors., in addition to emitting an aroma scent of fragrance providing a pleasant smell which will not interefere with the cleaning process of the air. The filter having a size and shape such that the filter element fits across the path of the air passing through the air vent and the structure for removably mounting the filter element on the vehicle in the path of air passing through the air vent so that its cleans the air in the enclosed enivronment of the cabin of the vehicles.