Outside of buildings Any rooms designated for smoking What are the requirements for smoking area
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People can be exposed to secondhand smoke in homes, cars, the workplace, and public places

E-cigarettes are also banned outright.Authorities are now looking to roll out sophisticated thermal cameras that can detect when a person is holding a lit cigarette in a non-smoking area, according to a Monday report by the Straits Times.The newspaper said the cameras will be positioned around residential areas and other public places across Singapore, and will also have the ability to catch other illegal "unhygienic acts" such as spitting and littering.Singapore first introduced anti-tobacco laws in the 1970s as part of a national effort to reduce smoking.It has since expanded the number of public places where lighting up is prohibited, including university campuses and in common areas around apartment blocks.Smoking in private cars is legal, but winding down the window while doing so is not.Singapore is jokingly described on souvenir T-shirts as a "very fine city" because of the number and size of penalties for odd offences, such as annoying a member of the public with a musical instrument and failing to flush a public toilet.

A total of 12 studies 1517,21,24,26,29,49,51-54 were included in the subgroup analysis, of which two studies 53,54 were retrieved from the KCL review 5
It's important to note that the amount in the container has nothing to do with the 3.4 oz restriction