The poster shows a skeleton.

Underneath the skeleton, these words: "Smoking does this to you."

The poster was created by Annelise Sunwall, a 5th grader at Sunnyside Elementary School in Great Falls, Montana.

And according to the Great Falls Tribune, it was one of the winners in a poster contest held in conjunction with the "Great American Smokeout."

Every year, the American Cancer Society holds the "Great American Smokeout" on the third Thursday of November.

The goal is to get smokers to quit - and to get the message out to kids that smoking is a bad habit that does nothing but make you sick.

Annelise has already gotten the message.

Now she's trying to pass it on to other kids.

"(Smoking) really affects your lungs," she said, in an interview with Tribune reporter Erin Madison. "And it's bad for your breathing.

When smoking damages your lungs, you can't get enough air.

And if you can't get enough air, you can't live.

Experts say smoking causes half-a-million premature deaths in the United States every single year.

At Elida High School in Elida, New Mexico, the 7th graders reportedly created an anti-smoking skit for the smokeout.

According the Portales News-Tribune, their local newspaper, the kids planned to perform the skit for younger students.

"So they won't smoke when they get old," said Elida student Kellie Yager, speaking with News-Tribune reporter Eric Butler.

Some grown-ups think 7th grade is awfully young to start talking to kids about the dangers of smoking.

But experts say that couldn't be further from the truth.

According to one expert, 8 percent of all smokers are kids in junior high.

"Actually, it's the kids who have the problem," said Theresa Teti.

Teti is the program coordinator for a group called TUPAC - the "Tobacco Use Prevention and Control" program.

She's trying to catch kids young before they get hooked.

"In Roosevelt County (New Mexico), we have one of the highest tobacco use rates among teens in the state," she told the News-Tribune. "And incredibly higher than the nation's averages."

At Carthage Middle School in Carthage, Missouri, anti-smoking groups are talking with kids even earlier - in 5th grade.

This week, according to the Carthage Press, the kids saw first hand the damage cigarette smoke can do to a lung - and how different a damaged lung looks from a healthy one.

"It was gross, the black one," said 5th grader Rylee Parrish, in an interview with the Press.

And just because you're young doesn't mean smoking can't hurt you.

The damage begins as soon as you start.

"I know that a lot of teenagers don't think smoke will affect them," said Great Falls High School student Sara Stewart, in an interview with the Tribune.

Stewart was another one of the poster contest winners.

Her poster showed a woman who looked young on one side and old and wrinkled on the other.

And Sunnyside Elementary 4th grader MacKenzie Way used her winning poster to drive home another important point - secondhand smoke from grown-ups' cigarettes can make kids sick.

Her poster showed a rainbow with the words, "My air is clean and colorful. Is your child's?"

"Not only does (smoking) affect you," MacKenzie told the Tribune. "It affects your family."