<unk>  (also called nasal lavage, nasal toilet, or nasal douche) is a personal hygiene practice in which the nasal cavity is washed to flush out mucus and debris from the nose and sinuses, in order to enhance nasal breathing.<unk>  can also refer to the use of saline nasal spray or nebulizers to moisten the mucous membranes.
Nasal irrigation
Nasal spray
Binasal occlusion
Tympanostomy tube
Laryngeal mask airway
Cloth face mask
Nasal cannula
Simple face mask