If you have this mental illness, you may like to smell odors, such as fox, gasoline, cigarette smoke or burning plastic, and other odors that are obviously unbearable to people, and repeatedly smell odors to make yourself feel happy physically and mentally. If you are not able to smell the odor, you may be irritable, difficult to quiet down, and find many reasons and excuses to smell, if you have such performance may be odor fetish. This is a psychosomatic disease that is related to a variety of causes, such as genetic factors, psychological factors, childhood experiences and personality factors, etc. It is important to actively treat such problems.