According to the data you reported (foul odor emitting from nose) your daughter might be experiencing rhinitis (nasal inflammation) or sinusitis (inflammation of the sinuses). Both conditions are most often caused by bacterial or viral infections. The bad odor is from the degrading products of the inflammation.


Rhinitis is usually accompanied with a nasal discharge or post nasal drip. The sinusitis might be present with facial pain. The exact location of the pain would depend on which of the four sinuses is affected. Please note, that in small children the Eustachian tube (tube-like canal between the throat and the ear) is shorter than in adults, thus making spreading the infection from the throat and nose to the ears easier.


You might want to take your daughter to an Ear, Nose and Throat specialist. He might want to have an x-ray or other visualization method taken(CT scan, for example). A nasal and throat swab might be needed to detect the exact bacteria and the most useful medication.