Fear of smelling fumes may be physiological factors such as pregnancy or pathological factors such as hepatitis, gastritis, chronic cholecystitis. Women of childbearing age can appear in early pregnancy, such as nausea, vomiting, especially when smelling fumes, odor gas, etc., and the body’s hormone levels. Pathological factors such as hepatitis patients, often manifested as nausea smell fumes. Digestive system diseases such as gastritis, chronic cholecystitis, nausea and discomfort when smelling inappropriate odors. In addition pharyngeal diseases, can also be in the fumes stimulate the nasal mucosa, produce nausea. Some patients will be allergic to the smell of fumes, which is a physiological reaction, avoiding fumes in daily life can be. Patients should maintain a light diet, balanced eating habits, eat more easily digestible diet. Avoid spicy stimulation, cold diet, keep the body well hydrated, but also can effectively relieve discomfort. If you have any discomfort symptoms, you need to go to the hospital as soon as possible, by the doctor according to the specific conditions, to develop individualized diagnosis and treatment plan, so as not to delay the condition.