Common sense need not apply.

Reason Magazine - Hit & Run > 'How Would You Like It If You Went to a Wine Tasting and You Couldn't Taste the Wine?':

The Chicagoland International Pipe & Tobacciana Show, held over the weekend in St. Charles, Illinois, was smoke-free this year, thanks to a state smoking ban that took effect in January. Organizers of the event, the country's largest pipe show, had hoped attendees would be allowed to light up as members of a private club:

The hall is strictly staffed with volunteers, convention-goers were to pay $15 to join the club, and attendees were to sign a waiver stating they "freely and willingly accept all the risks of smoking, second-hand smoke, third-hand smoke, and all other risks, both real and imagined, regarding smoking tobacco."

But St. Charles police, DuPage County health officials and anti-smoking advocates didn't buy it.

...Pipe smokers, banished to tents outside the convention center, were understandably irked. "How would you like it if you went to a wine tasting and you couldn't taste the wine?" said one. "It's a freedom issue."