Chicken soup, a popular home remedy for the common cold since at least the 12th century, may really help. The steam from chicken soup may open up congested noses and throats. Soup also provides fluid, which is important for fighting infection. Some researchers suggest that substances in chicken soup reduce the inflammation associated with the common cold, thus providing some relief of symptoms.
Although researchers have not been able to prove that chicken soup helps cure the common cold or other illnesses, you may want to take advantage of these apparent healing properties.
Barrett B. Viral upper respiratory infection. In: Rakel RE ,ed. Textbook of Family Medicine. 8th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 16.