How can I keep my colleagues from smoking in the office! To emphasize, the general methods have been used. Why write slogans?

I feel the same way, but sometimes it is even more helpless for leaders to smoke. However, the most effective way I tried once was to cough loudly when a leader came, and then walk past the leader with a cigarette. I couldn't even cough. Then he shouted, "Don't poison us, you will die in the smoking area." Say that finish, the leader just smiled, didn't pick up the smoke, and ran away. You don't have to give him face ~ ~ and you don't have to yell at him when you meet such a person with no quality or face, and you must let him know in front of the leader that the leader will not help him, and then everyone will yell at him ~ ~ and let him completely dispel the years that have poisoned us.