Electronic nose machine is a device that mimics the function of the human nose for analysis, recognition and classification of smells in the fields of agriculture, food and environmental. Electronic nose can be applied to solve the problems associated with smell and can help users make decisions related to odors. Whether it’s the smell of food and drinks of various kinds, odors, perfumes, rice, the stench from factories or farm animals, and etc. The data obtained from the electronic nose can be used for product development and quality control, the stench from the plant source detection or improved farmhouse to stink less.