Provided are an insect detection method that includes detecting an intrinsic gas emitted by an insect using a gas sensor including a gas adsorption membrane, the gas sensor being selected from a resonant sensor, an electrical resistance sensor, and a field effect transistor sensor； a gas sensor for insect detection and a gas sensor array for insect detection, which are suitable to be used for this method； and an electric machine product having the gas sensor or gas sensor array mounted therein.
