It sort of sounds like you smile when you find yourself in a situation where you wouldn't know what to do. I personally find it kind of awkward when someone is crying in front of me, and I don't know how to respond to that, but I have my own way of trying to stumble through the situation as smoothly as possible. If that rings true to you, then there's no disorder for how you're behaving, it's just how you cope with awkward situations.
Whatever the reason is for your smiling, it is possible to change how you react. Try taking 10 minutes every day to look in the mirror and plan how you would react to a situation in which you would normally smile. For example, you look in the mirror and pretend that you're consoling someone who is crying, or that you're talking to someone at a funeral.
The more you can imagine the situation, the more effective your reaction changing will be. Don't stress out if you don't see any changes right away; give it a few weeks and you might notice that it's at least easier not to smile in an inappropriate situation. Practice makes perfect, as they say!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.