33.This section limits the Welsh Ministers’ power to designate premises used partly as dwellings as additional smoke-free premises. Dwellings may only be designated as smoke-free by the Welsh Ministers to the extent that they are not enclosed or substantially enclosed and are workplaces or open to the public. They may only be made smoke-free when being used as workplaces or are open to the public; and in those areas which are being used as workplaces or are open to the public.