Are sub-national jurisdictions permitted to have smoke-free laws?
Yes
If yes, are they allowed to be more stringent than national law?
Yes
If yes, do one or more sub-national jurisdictions have smoke-free laws more stringent than national law?
No
A brief comment on the extent of sub-national legislation:
The only exemption to a national ban on smoking in public places is for hotel guest rooms, 10% of which may be designated as smoking rooms. A sub-national jurisdiction could pass a local law that bans smoking in hotel guest rooms entirely.
