Scent detectors are commonly known as noses, which is a five-letter word. Noses are the primary organ of smell in humans and other animals, and they are responsible for detecting scents in the environment. The nose is made up of millions of olfactory receptors that detect odors and send signals to the brain, allowing us to identify different smells. Noses are also used to detect pheromones, which are chemicals released by animals that can affect their behavior.