Young children seem to enjoy putting foreign objects in their nostrils and then forgetting about them. Favorites are food, paper, cotton, and beads. The body tries to reject these intruders by producing a foul-smelling yellow nasal discharge.
Your child can try to blow the object out by blowing his nose vigorously several times with the other nostril closed.
DO NOT try to remove the object by putting anything into the nose, including tweezers and fingers. This almost always pushes the object in farther and makes removal by the healthcare provider very difficult. Watch your child closely to make sure that he doesn't push it in.