In my culture, if you smoke in their house, you are a bad guest, but if they don't allow you to smoke in their house, they are not rude hosts.

在我的文化中，如果你在他们家里吸烟，你是一个不好的客人，但如果他们不允许你在他们家里吸烟，他们也不是粗鲁的主人。