Michigan could soon become the 38th state to ban smoking after the state Senate passed a bill Thursday that had been previously approved by the House. Michigan's ban would provide an exemption for casinos and some other businesses.

Here's a look at the different types of bans across the country:

_Smoking in state and/or local government buildings is banned in 33 states and the District of Columbia.

_Smoking in private workplaces, not including restaurants or bars, is banned in 24 states and the District of Columbia.

_Smoking in restaurants is banned in 28 states and the District of Columbia.

_Smoking in stand-alone bars is banned in 23 states and the District of Columbia.

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Source: The American Lung Association