Can being outside help or hurt a cold?

Cold outside?: Cold, dry air ^’s nasal mucus production ; viscosity. Mucus is part of our body’s defense mechanism. It traps viruses ; other particles. When the mucus is thick (sluggish) it makes removing viruses more difficult. Another function of the nose is to warm cold air before it moves to the lungs. Capillaries in the nose dilate to bring warm blood to the nares. As these tissues fill with blood the nose.