Sun Port Mini Fresh Air Ionizer/Air Purifier/Oxygen Bar/Ozone Ionizer Cleaner for Car and RV (RH-FLZ-YS) This mini air ionizer generates millions of negative ions to air which can quickly dust, smoke, bad odor and allergens from air. Simply plug it to the cigarratte lighter socket of your car and it will do the job automatically. Please note that it will only work for car with 12V DC (normally this means regular passenger car and sedans), but not 24V DC (normally these are big truck or buses). Use it whenever you drive can help reduce the chance of sickness and allergies.