It is hot in Sumatra and apart from a roof a warung is completely open to the air. It is permitted to smoke on the buses, the driver and conductor certainly will be, but all the windows would be open.
About the only place you see a "dilarang merokok" (no smoking) sign is in a petrol station (regular petrol 70c/lite).
Flying from Medan in Sumatra to Penang Island in Malaysia we discovered that historic Georgetown was completely "Smokefree" - streets, buildings, everything. It was part of the terms and conditions of becoming a Unesco World Heritage Site, but that everyone ignored it.
We happened to be in Georgetown for Malaysia's militaristic National Day parade. The soldiers, posted to protect the dignitaries on stage were lounging around smoking under a "Smokefree Georgetown" sign.
In 17th century Japan, the Tokogawa Shogun banned tobacco smoking in 1609, 1612, 1615 (twice) and 1616. By the time of the fifth ban, the Shogun's own bodyguards were smoking openly in front of him.
In 1625, the ban was repealed and within 15 years the Japanese had adopted the Native American custom of offering visitors a pipe of welcome. Currently Japan has the world's longest average life expectancy and world's third highest smoking rate.
The duty free tobacco allowance for Singapore is zero and at the other end of the scale China, Japan and Vietnam allow you to bring in 400 cigarettes and Laos allows 500.
New Zealand has an allowance of only 50 cigarettes. Tobacco doesn't show up on a baggage scanner so - at 1000 per cent mark-up - it is not unusual in Auckland to see cigarette packets with health warnings written in Mandarin.
**When Fred Frederikse is not building, he is a self-directed student of geography and traveller. In his spare time he is co-chairman of the Whanganui Musicians Club.