blowing cold air

Nose-blowing is the act of expelling nasal mucus by exhaling forcefully through the nose. This is usually done into a facial tissue or handkerchief, facial tissues being more hygienic as they are disposed of after each use while handkerchiefs are softer and more environmentally-friendly.Nose-blowing may be used to alleviate nasal congestion or rhinorrhea (runny nose) resulting from colds, seasonal allergies, or to expel nasal irritants.

View More On Wikipedia.org