Olfactory sensors are specialized devices designed to detect and identify different odors in the environment. They work by mimicking the way the human nose senses smells, using various technologies to analyze chemical compounds in the air. These sensors are commonly used in applications such as food quality control, environmental monitoring, and even in robotics to help machines navigate their surroundings. These sensors can be found in various forms, including electronic noses and gas chromatography systems. They play a crucial role in industries like food and beverage, fragrance, and healthcare, where accurate odor detection is essential for quality assurance and safety.