Please suggest what food to eat during hay fever and runny nose?

Nothing special: Unless you are eating a food you are allergic to, there is no special food to relieve you of your hay fever. Sometimes spicy foods may give you a sensation of nasal decongestion. Alcohol tends to aggravate nasal symptoms.

Good nutrition: Is important for the immune system....Easting a balanced diet won't "cure" your symptoms..But it is a good idea to do so. No specific foods have been shown to get rid of those symptoms.