Smell

Most people have a normal sense of smell, but some can smell things that others can't, and also smell emotions, and things such as Danger.

Olfaction is the sense of smell. This sense is mediated by specialized sensory cells of the nasal cavity. Many vertebrates, including most mammals and reptiles, have one of two distinct olfactory systems—the main olfactory system witch is the normal sense of smell, and the accessory olfactory system., witch detects pheromones, and in rare cases can mentally detect Danger in a scent, or Emotions.