Hi Moe.hadla, Thanks for writing your query. Smoking has many adverse effects in our body. It can cause chronic obstructive pulmonary disease, lung cancer heart attack, etc. Throat and oral cancer is more commonly seen with persons chewing tobacco. You should get yourself examined and investigated by an ENT specialist to rule out any cancer. Following investigations can be done :- 1. Throat swab culture. 2. Chest X-Ray PA view. 3. Sputum examination. Smoking can result in breathing problems as it can cause bronchoconstriction- narrowing of the air passage. You should gradually decrease the number of cigarretes smoked per day. Medicines, if needed, can be planned according to your clinical examination and reports of the investigations. I hope this is helpful to yo. Thanks.