What public places are considered an offense for smoking?

Recently, the cops have been way too annoying about smoking or simply hangong out in public. Recently got shouted at while smoking in a lane next to my office building. There isn't an allotted smoking area in the office and the tapri is quite far away from where the office is. Hence the smoking on the street side. How do I know if it's okay to smoke in a spot without getting caught? This is in Mahim btw