This situation is mainly considered to be a decision of personal physical factors, irritating smell easily caused by the gastrointestinal tract reaction, each person’s tolerance level is different, belongs to a normal physiological phenomenon. If the patient is more sensitive, usually try to avoid contact with irritating odors. If you usually have indigestion or picky eating, anorexia, etc., it is also easy to cause gastrointestinal reactions. If you are more sensitive to odor, you can use Chinese herbal medicines that strengthen the spleen and stomach and promote digestion, such as Baohe pill and stomach-healthy tablets. In the case of women of childbearing age, it also depends on whether there are any reasons for pregnancy. The effects of over-sensitive nerves, mental tension and other factors can lead to nausea and indigestion symptoms from smelling bad odors.