What should you know about COPD caused by smoking?

Tobacco smoke irritates the airway lining and can increase mucus, inflammation, and narrowing. It can also damage the small air sacs involved in moving oxygen. COPD may develop after many years of exposure, but a smoking history does not prove that every cough or breathing problem is COPD. Cough, phlegm, wheeze, and chest tightness can have several causes and deserve an appropriate assessment.

[Spirometry](/treatments/diagnostics-and-screening/spirometry/) measures airflow and can support evaluation. Tell the clinician about current and past smoking, workplace dust, fumes, and second-hand smoke.

Stopping smoking removes an ongoing source of airway irritation, even if COPD is already present. A [Smoking Cessation Programme](/treatments/lifestyle-and-wellness/smoking-cessation-programme/) can help you choose a quit approach, manage cravings, and plan for triggers. Keep using prescribed inhalers and attend a [Chronic Disease Review](/treatments/consultations-and-assessment/chronic-disease-review/) so symptoms and treatment can be reassessed.

Get emergency help for severe breathing difficulty, blue or grey lips, confusion, collapse, or trouble speaking. Seek prompt advice for a new persistent cough, blood in phlegm, chest pain, fever, or a sudden change in breathing. These warning signs should be assessed rather than attributed automatically to smoking or COPD.

Ask whether spirometry is appropriate, how smoking has affected your risk, which quitting supports fit you, and how to recognise a COPD flare-up. Mention vaping, shisha, occupational fumes, and second-hand smoke as well as cigarettes.