Father-in-law likes smoking, because he has children, so he is euphemistically said and he scolds me. It is really disrespectful to the elderly. Should I scold him for going back?

Don't scold back, my father-in-law is an old man. In addition, it is unrealistic for smokers to quit smoking immediately. Since you think about children, try to take them away from the scene when my father-in-law smokes. I believe grandpa loves his grandson, and he will try his best to smoke in front of the children. Don't conflict with my father-in-law's face. The problem has not been solved, but deepened.