I've seen a product from Manhatten
oil advertized in Summit Racing . Different fragerences They goe in the gasoline and makes the exhaust smell like Tangerine, Licorice, Lemon, Vanilla, Watermelon, Root BBBeer, Pina Colada, Blueberry, Bubble Gum, Cotton Candy, Cherry Bomb, Groovy Grape, Cinnamon, Raspberry, Strwaberry, Banna, Fruit Punch, and Apple. Try opening up the garage doors before starting the car.