Willy Wonka demonstrates his latest invention: television chocolate, which makes it possible to send a real bar of chocolate through the television. Willy Wonka explains his inspiration: if television can break up a photograph into millions of tiny pieces, why can't he do the same with chocolate? His guests state that the invention is impossible, and one of the kids briefly explains the scientific reasoning behind it (which isn't entirely accurate). Mr. Wonka sends a large chocolate bar into a TV set, and Charlie reaches in and grabs it, showing that the invention does in fact work.
He uses a cartoon clip to explain the anatomy of the nasal cavity and where mucus is produced. He then sets up a giant tube with nose hairs to show how the nose works. The hairs are meant to filter air before it goes into the body. Then he explains that snot and mucus trap bacteria and larger particles from going into the lungs. They blow feathers into one end of the "nose" and show that clean air is coming out the other end because the mucus trapped the feathers.