Smoking and Asthma: How Tobacco Smoke Worsens Your Symptoms Asthma is a chronic respiratory disorder that affects millions of individuals worldwide, causing difficulty breathing owing to inflamed and constricted airways. While several factors can cause asthma episodes, smoking is one of the most hazardous. Tobacco smoke contains thousands of harmful compounds, which irritate the lungs and exacerbate asthma symptoms. Whether you smoke or are exposed to...