Qld's Ekka a no-smoking zone
Fireworks and sideshow alley rides will be the only things lighting up at this year's Brisbane Ekka.
The Royal Queensland Show will be a smoke-free environment after organisers scrapped the previous 13 designated smoking areas.
Instead, patrons will need to go to five off-site smoking areas.
The annual event attracts about half a million people over 10 days in August and the change is a continuation of Queensland's smoke-free policies.
Smoking costs the state about $6.1b in health costs every year and contributed to premature deaths, according to chief health officer Dr Jeannette Young.
"We also know that one in 10 people who die from smoking-related illness are as a result of second-hand smoke," she said.
"These changes are the latest step in a series of moves towards a smoke-free Queensland."
Cancer Council Queensland CEO Jeff Dunn said children, in particular, would benefit from the change.
"Our hope is that other shows and exhibitions will follow in the Ekka's footsteps," Prof Dunn said.
"Australia is at a turning point in public health history, where Queensland has earned a reputation as one of the world's leaders on tobacco control."
Tobacco remained the single largest preventable cause of death in Queensland, he said.
Smoking has also been banned at the Royal Perth Show and Royal Hobart Show.