What is the ruling on drinking water when feeling a lump in the chest during fasting, knowing that this recurs due to smoking?

If the choking is severe and unbearable, it is permissible to break the fast, and it may even be obligatory if there is a fear of perishing. In such a case, breaking the fast is permissible, and you must make up for those days. However, if the choking is bearable, it is not permissible to break the fast, and if you do, you must make up for it and repent.