The CS-X3 Air Spencer Brand new Air Spencer CS-X3 Squash, one of the sweetest and unusual addictive scents to hit the US market from Japan. The Air Spencer CS-X3 car air freshener is a stunning product from the Air Spencer series. The outer cassette style casing is made from high quality plastic with a smooth sleek finish, topped with a chrome CS-X3 emblem. The inner scent cartridge is refillable cassette featuring a sliding louver to adjust the strength of the scent. Now how can we explain the Squash scent? Some say it smells like an intense candy-bubblegum euphoria.