Cold weather affects the nose by slowing the movement of mucus and the tiny cilia that help trap and remove particles. The nose normally warms and moistens incoming air using a thin layer of mucus. In cold conditions, moisture evaporates quickly and the mucus thickens. The thicker layer does not flow as smoothly and becomes less effective at capturing dust, bacteria, and other particles. Cold air also reduces the activity of the cilia. These hair like structures beat in coordinated waves to push

21K views · 102 reactions | Here's a short animation showing how the movement of air around the UK over the next few days will affect our temperature and weather. | Met Office | Facebook