What happens to the air in the nasal cavity?

The inside of our nose is covered with a mucous membrane and fine hair. The hairs are used to trap large debris that can enter the nasal passages during inhalation. The mucous membrane is made up of cells that create mucus. This mucus contains lysozyme, a disinfectant. Therefore, bacteria and viruses for the most part die when they enter the nasal cavity. There are many small blood vessels under the mucous membrane – they make the air warm so that it is absorbed faster.