I am currently in Serbia. It is not a part of EU, so there is no smoke ban at all (neigbour Bulgaria is EU and has at least some restrictions). There are no such things that "smoke or non", the whole venue is usually smoking. There are some places with zoning (usually those that has children in mind) and very rare ones totally non-smoking (expats are keeping a registry of those on Google Maps). It is quite shocking and makes me doubt libertarian ideas.