Smoke Purifier, Portable Smoke Purifier, Portable Smoke Purifier Fan. Multipurpose Air Purification Ashtray Anion Purification Practical Automatic Purifier Ashtray Portable Gadgets for Family Office. Filter: The ashtray of the air purifier is equipped with a negative ion purification filter to absorb smoke and odor, filter dust in the air, and then release negative ions and air.