Chemical substances refer to any type of matter that has a distinct chemical composition and properties. In the context of the sense associated with chemical substances, it refers to the ability to detect and perceive different smells or odors in our environment.
Olfaction is the scientific term for our sense of smell. It involves specialized receptors in our nasal cavity detecting and interpreting different odor molecules.
Pheromones are chemicals released by animals that influence behavior or physiological processes in others of the same species. They play a role in communication and attraction within animal communities.