Coughing, sneezing, throat irritation and breathing discomfort often increase during winter. However, these symptoms do not always indicate an infection. Air pollution can irritate the respiratory tract and cause problems that resemble a common cold, making it important to understand the possible causes.
Pollution-related cough develops when the airways are exposed to fine particulate matter, smoke, dust and other pollutants. Symptoms may include a dry cough, burning sensations in the nose or throat, watery eyes, chest tightness and mild breathlessness. They may become more noticeable after spending time outdoors, travelling through congested areas or encountering smoke.
A viral respiratory infection can produce similar symptoms, but it may also cause a runny or blocked nose, sore throat, headache, fatigue, body aches and fever. Common colds usually improve within a week, although some symptoms can last longer. Flu and other respiratory infections may cause more severe illness.
Symptoms alone cannot always distinguish pollution irritation from an infection. Exposure patterns can offer clues, but a healthcare professional may need to assess persistent or worsening symptoms and recommend testing when appropriate.
People should avoid taking antibiotics without medical advice. Antibiotics do not work against viruses and are not a treatment for pollution-related irritation. Unnecessary use can cause side effects and contribute to antimicrobial resistance.
Reducing exposure to polluted air can help. Check local air-quality updates, limit strenuous outdoor activity when pollution levels are high and use a well-fitted mask when appropriate. People with asthma or other chronic conditions should follow their prescribed care plans.
Seek prompt medical attention for difficulty breathing, chest pain, severe weakness or symptoms that persist or worsen. A cough is a symptom, not a diagnosis, and identifying its cause is essential for appropriate treatment.

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