The power of mind clairalience is, to put it simply, clairvoyance of the sense of smell. For example, during the day you might smell food despite none being nearby, only to find yourself eating that specific food for dinner. A more grim example of clairalience would be the smell of gunpowder if you are receiving a psychic scent from some sort of crime. Clairvoyant talents of the mind come in a variety of facets, and clairalience is one of them. Just as you can increase the others, you can enhance your talents for the smelling version of clairvoyance as well. Put in the time and practice and you will surely see a development in your abilities.
Clairalience is one of the harder clairvoyant talents to develop. If you are a beginner at developing psychic abilities, it might be best to work on other talents that are easier to work on and more useful. Scents can often be difficult to identify, and experiencing only scents might leave you confused. However, an advanced worker might find that the clairalience provides the power of mind a great opportunity to deepen understandings of other clairvoyant visions.
If you have decided to pursue the enhancement of your clairalient abilities, the first thing you should do is to develop a greater sense and ability to decipher scents all around you. For example, try naming specific flowers instead of saying you smell something floral. Roses, lilies, even sunflowers all have specific scents. Once you have developed a greater awareness for ambient scents, it is time to try meditating.
While meditating, see if you notice any scents. Perhaps these can be explained by something in the room—a scented candle or fresh laundry for example. Do any scents seem out of place? If you do not smell anything out of place, perhaps you could try a visualization exercise. Picture a room in your mind. Try picking a room you are at least somewhat familiar with. The room does not matter as much as it might in other exercises, as you are not focusing on what it looks like, but rather what it smells like. What kinds of smells would belong in this room? Is it a kitchen? Is something cooking? Does it smell clean? Ask yourself these questions until you can actually smell these things. This is no easy feat, so keep trying until you have mastered clairalience, another example of the power of mind.