The electronic nose is a device model system of Government the human nose to mimic the smell. The basic components of an electronic nose is the best smell the gas sensors that are sensitive to volatile chemicals, each with several different options are included in a single act or smell gas or vapour into. When the molecules of the chemical evaporates with the temple, come into effect, the electrical signals in circuits changed due to changing resistance of measuring electrical signal differences which have caused the electrical signal, the format appears to come. Then the unit is processed by a computer system to analyze the signal format.