See what happens when a NASA scientist tests this popular belief.
Watch this video and you'll believe too.
Find out where she ended up after sharing a very special Cheerios bowl with her dying mother.
This video showing smokers vs nonsmokers lungs lungs really puts things into perspective. Go ahead, take a real deep breath.
Can you imagine how terrifying it would be to have this disorder?
WARNING: Some of the images within the video are troubling, but this is very important.