The nose filters impurities and particles in the air


A well-run system 

The nose is a system for washing out impurities and a filter of particles in the air.¹

Our nostrils have many hairs which help prevent harmful substances from entering the nasal passages and delicate lung tissue.²

The impurities get trapped in the sticky nasal mucus inside our noses. The cilia (tiny hair-like structure on the inside of your nose) clears the particles away towards the back of the throat. The particles end up swallowed or coughed out.²

The nose also defends the lower airways from the harmful effects of the breathed-in air by acting as an air conditioner. The nose warms, filters, and humidifies the air so that clean, moist air at a comfortable temperature of 37°C gets right to the lungs.³

What happens when the system fails

High levels of air impurities can overload the nose,¹ ⁴ which may result in impaired clearance of inhaled particles.⁵ Failure to clear particles from the nose can lead to wider effects on the respiratory system and overall health.⁶ 

Here’s the good news 

Otrivin Breathe Clean Daily Nasal Cleanser can help you to breathe cleaner everyday. Otrivin Breathe Clean is a 100% natural saline solution, which cleanses, moisturises and soothes the nose, allowing it to function as a natural filter.⁷ Otrivin Breathe Clean can wash away airborne impurities and helps remove mucus, crust and debris.* ¹ ⁴


Clean, moisturise & soothe your nose

* Based on generic nasal saline sprays.

1 Shusterman D. The effects of air pollutants and irritants on the upper airway. Proc Am Thorac Soc 2011; 8(1):101–5.

2 Jones N. Adv Drug Deliv Rev. 2001;51:5–19

3 Eccles, R. 2009. The nose and control of nasal airflow. In: Adkinson N, Bochner B, Burks A, Busse W, Holgate S, Lemanske R, O'Hehir R, eds. Middleton’s Allergy, Principles and Practice, 8thedn - Vol. 1. Philadelphia: Mosby, 640 – 51

4 Papaioannou AI, et al. In: Bachert C, et al. Eds. The nose and sinuses in respiratory disorders (ERS monograph). Sheffield, UK; European Respiratory Society: 2017: 1–11.

5 CITEPA (Interprofessional Technical Centre for Studies on Air Pollution). Available at: Last accessed July 2019.

6 WHO. Air pollution news release. Available at: Last accessed July 2019

7 Papsin B, McTavish A. Saline nasal irrigation. Its role as an adjunct treatment. Can Fam Physician. 2003; 49:168–73


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