2. Charcoal
Car air fresheners only mask bad odors. If you’re that person who eats subs with extra onions in your car, your best bet is to get some charcoal briquettes and place them under your car seats. Charcoal absorbs all foul smells. Plus, you can still use them for a bbq later. These will not make your car smell pretty, however. To see how you can do that without buying those ugly hanging strawberries or expensive fresheners, check out hack #30 again.