@TindrasGrove @cstross we did that in 2007. It has made a difference.
Although it's not banned in private homes for the most part, most shared living areas will have restrictions in place (mainly because people have to work there and the major reason we were able to pass it was via protecting workers' health and not the 'personal freedoms curtailed' angle).
I had a great many Internet arguments with people about this around that time.