Hey @mdaminulislam,
Smoking is very harmful for health. How many people have I seen dying in front of me who were determined to smoke. There is no ban on smoking in our country nor is there any punishment. Absolutely the same rules as narcotic rules should apply to smoking. It is good that you do cleaning around the corporation and you are doing a very good job for the environment.
Thanks for the great comment, In fact it is a poison yet we smoke, this smoking causes many deadly diseases. Actually there is no law against it so it is sad.