How can I tell if there is a foreign body in my nose? In the case of children, the first thing to clarify is whether there is a history of foreign body congestion. If there is no guardian present to provide a medical history, one symptom is chronic unilateral nasal congestion, repeated stages of mucusy nasal discharge or nasal discharge with a bad smell or odor. It is possible to smell a long-term odor or even foul odor from the unilateral nostril of the affected child, and some of them will have blood-stained secretions. The main judgment should be to go to the ENT department and do a rhinoscopy with a simple anterior rhinoscope or electronic rhinoscope, and it will be clear. If there is a foreign body for a short period of time, it can be found visually and removed. If there is a longer period of time, even 1 or 3 months, without providing a medical history, the nasal cavity can be seen, along with swelling of the nasal mucosa and blockage by secretions. At this time, you should first clear the front of the secretion and check deeper under the rhinoscope, sometimes you can find the foreign body, so it is easier to determine the foreign body in the nasal cavity.