When incense is burned prior to magical workings, fragrant smoke also purifies the altar and the surrounding area of negative, disturbing vibrations. Though such a purification isn’t usually necessary, it, once again, helps create the appropriate mental state necessary for the successful practice of Magic. When the incense is smoldered in a ritual setting it undergoes a transformation. The vibrations, no longer trapped in their physical form, are released into the environment. Their energies, mixing with those who use them, speed out to effect the changes necessary to the manifestation of the Magickal goal.
You needn’t limit incense use to ritual, but avoid burning healing incense just for the smell, or to freshen up your stale house. Burning magickally constructed and empowered incenses when they’re not needed is a waste of energy. If you wish to burn a pleasant-smelling incense, compound a household mixture for this purpose.