>>14482489It's probably not that you smiled but that you looked them in the eye.
I don't know about Switzerland but in Sweden and Finland that's something you should absolutely not do.
Eye contact purely means someone wants to fuck you or fight you.
The few times I've met American tourists have always had culture shocks. Once in Stockholm, a fat old American woman came up to me and asked who had built a random church while looking me straight in the eyes.
You just don't fucking do that. I literally hardly can talk when starring someone in the eyes.
