👉 Nose fluid, or mucous membrane secretions, are essential for maintaining the health and function of the nasal passages. These fluids serve multiple purposes: they trap dust, bacteria, and other foreign particles, preventing them from entering the lungs; they humidify and warm the air we breathe, protecting delicate lung tissues from dryness and cold; and they help to neutralize odors and irritants. Additionally, nose fluid contains antibodies that fight off infections and enzymes that break down pathogens. The balance of these secretions is crucial for respiratory health, and any disruption can lead to conditions like congestion or sinusitis.