Mint Extract: If you favor neither the smell of citrus nor vanilla, you can perhaps use mint extract instead. Pour several drops of mint extract on a couple of cotton wools. Toss the cotton wools inside the confined space and leave them for a couple of days.
Orange peels: Get an orange and poke it with a sharp object like a needle or fork to form small holes. Place each of the cloves inside these small holes until most of the orange surfaces are covered. It may look like a hedgehog with the cloves jutting out of the orange fruit. Leave it in the confined area for a couple of days. The area will smell nice with the said combinations.