Smoking Ban Brainstorming

**Who is affected by smoking bans? Smokers who want to smoke while at a restauraunt or out to eat. Restauraunt and bar owners are very affected by it. They may lose business to people who spend a lot of money there.
**Why are bans put in place? It is legal to smoke above the age of 17, but cities and counties are starting to put bans on where people can and can't smoke.
**Does this go against their rights as American citizens?
**Why are smoking bans put into place at all?
**Who decides where people can and can't smoke?