Put two caps full of vanilla extract in a coffee cup, then place it in the oven at 300 degrees for one hour. Within twenty minutes the whole house smells like Heaven. It's actually a common realtor trick.
You can also use a toothbrush and lemons to fully clean your sink drain. Your sink drain is home to some of the grimiest dirt and germs. Get directions baking soda, a toothbrush, and citrus fruits to get your sink smelling and looking fresh here.