what do you do when you see someone smoking?

[Mintee]

if its not near me in a photo or far away from me, I dont do anything,
but if its near me in a restaurant or closed confined place, I ask them politely to put it out and open a door or window.. cause we non smokers have a right to clean air inside a closed building... smokers dont have the right to polute the air for others... if they want to kill their cells inside their lungs they can do it out in the open.. where the air will be cleansed eventually