Nausea and uncomfortable smell of fumes is most often caused by chronic laryngitis and allergic pharyngitis. Due to chronic laryngitis and allergic pharyngitis pharyngeal inflammation of the mucous membrane, the smell of fumes produces a series of reactions, resulting in nausea, itching, burning sensation, throat discomfort and other symptoms. In addition, hepatitis, cholecystitis and gastric disease can also occur, so it is best to go to the regular hospital ENT and gastroenterology department to further improve the examination and find out the cause of the disease. Finally, in married women, similar symptoms can occur in early pregnancy.