The insect abdomen of the Lycidae has odorous glands, and after sexual maturity, the odorous glands also mature. When they are frightened, they will eject odorous liquid from the odorous glands and wait for the opportunity to escape. This liquid is irritating and corrosive, and has a repellent effect on some insects. For most people, insects of the Lycidae family only leave a nasty smell.
A few people's skin will have an allergic reaction to odorous fluid, which is red and swollen with a burning sensation. If this smelly liquid enters the eyes accidentally, it will cause different degrees of photophobia, tearing pain, and visual impairment. If it is not handled in time, it may cause more serious damage to the eyes, such as corneal ulcers and bulbar conjunctival erosion.