Runny nose is not a long term side effect of rhinoplasty and will be stopped after one month. If runny nose persist for longer than a month, there should an allergenic and sensitivity reason behind it and needs special treatments. Some rhinoplasty patient experience runny nose when they are eating hot food. It rarely happens and is curable.
Myth about runny nose
Some people believe that after rhinoplasty you may have runny nose while you do not notice that. It is a myth and is not correct.