What happens when you have a cold and vomit. Generally speaking, the flu, in most cases, involves the respiratory tract with coughing, coughing up phlegm, runny nose and fever. But if there are some patients, infected with the influenza virus, the destructive power is stronger and besides affecting the respiratory tract, it also enters other organs of the body through the blood and enters the intestines or stomach, causing symptoms such as diarrhea and even vomiting. This symptom is a normal situation, generally speaking, due to the viral infection, it is a self-limiting disease, that is, without treatment, it can also get better on its own, so the use of antiemetic drugs, such as domperidone tablets, patchouli oral solution, are very good can treat the flu vomiting.