Unilateral rhinorrhoea in the paediatric age group could be an alarming sign that warrants a clinician attention. These patients are routinely brought to see general practitioner as parents may not be aware of the urgency to intervene surgically. Herein we describe a case of a toddler who presented initially to a general practitioner with unilateral nasal discharge. He was subsequently referred to the otorhinolaryngology department for unresolved rhinitis. The child was examined, and the diagnosis of an embedded foreign body was made. X-ray of the paranasal sinus unveiled an embedded button battery. An emergency endoscopic retrieval of the button battery was performed under general anaesthesia. Unfortunately, the case was complicated with a huge septal perforation.