INDIANAPOLIS -- An Indianapolis anti-smoking group released research on Tuesday they said highlights why the city needs stricter rules when it comes to lighting up.

Smoke Free Indy said a new study, done in conjunction with the Roswell Park Cancer Center, shows that establishments that allow smoking are 11 times more polluted than those that don't, 6News' Jennifer Carmack reported.

Researchers with Indiana Tobacco Prevention and Cessation took air quality samples at 10 venues across the city in March, although Smoke Free Indy would not disclose the exact venues studied.

Supporters of a proposed citywide ban on smoking said the study is further proof that secondhand smoke is dangerous.

"The time has come for Indianapolis to join a growing list of cities that no longer ignore the overwhelming evidence," said Dr. Christopher Doehring.

But others said that people should have the choice whether to expose themselves to secondhand smoke or not.

"I think this is probably a valid study, but it doesn't change the fact that in Indianapolis small businesses should be able to decide what they want to do with their own business," said resident Tommy Datzman.

Todd Howard, the owner of the Bourbon Street Distillery, said it's his right as a business owner to decide if people can smoke, although he does admit secondhand smoke could be harmful to his employees.

"Maybe a little bit, but we're also in the bar business. You should be used to it," he said.

Crackers Comedy Club went smoke-free last month for exactly that reason, after comedians started to request nonsmoking shows more and more frequently.

"There are many benefits to going smoke-free. The best and biggest one, of course, is health reasons," said Crackers owner Ruth Anne Bunting.

A public hearing on the smoking proposal is scheduled for Wednesday night. The Community Affairs Committee meeting is at 5:30 p.m. in Room 260 of the City County Building.