<s>[INST] Hi, I gave up smoking two weeks ago and since have had a very tight chest and find breathing more difficult, I also feel a burning sensation in my chest. I am 30 years old and have been smoking since I was 18. How long do you think this will last? Is this likely to be a symptom of giving up? [/INST] Thanks for your question on Healthcare Magic.I can understand your concern. No, these symptoms are not due to smoking cessation.Possibility of bronchitis (inflammation of airways) is more likely.It is commonly seen in smokers.. So better to consult pulmonologist and get done clinical examination of respiratory system and PFT (Pulmonary Function Test).PFT will not only diagnose bronchitis but it will also tell you about severity of the disease and treatment is based on severity only. You will mostly improve with inhaled bronchodilators (formoterol or salmeterol) and inhaled corticosteroid (ICS) (budesonide or fluticasone).Don't worry, you will be alright with all these. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>