Smelling gasoline may be caused by physiological factors such as recent stress; it may also be caused by xenophobia. 1. Physiological factors: due to different personal preferences or recent factors such as high stress, may lead to the emergence of personality abnormalities, such as like to smell gasoline, like to smell paint, like tearing paper and so on. 2. Ectophagia: If the patient’s body lacks iron, zinc and other trace elements or suffers from autism, schizophrenia and other mental illnesses, may induce ectophagia, resulting in the patient likes to smell gasoline; may also be accompanied by love of soil, love of soap and other abnormal symptoms. If you like to smell gasoline, we recommend that you go to the hospital after eliminating physiological factors to determine the cause of the disease and actively treat it.