Sneezing twice may be triggered by pathological factors on the one hand, or by adverse irritation on the other, and does not require special treatment measures. Sneezing can occur easily when exposed to bright light, if you smell irritating gases or if you come into contact with dust. However, no special treatment is usually needed, and sneezing symptoms will be relieved naturally when the environment is removed. There are also pathological factors, such as allergic rhinitis or cold induced by the symptoms, if the symptoms are more serious, you need to take appropriate treatment measures, if not very serious to pay attention to the care of the nasal cavity, usually should also pay attention to a reasonable diet.