What does the following passage show in Roald Dahl’s novel Charlie and the Chocolate Factory?

What does the following passage show in Roald Dahl’s novel Charlie and the Chocolate Factory?
What does the following passage show in Roald Dahl’s novel Charlie and the Chocolate Factory?: “You’ll be giving that nasty cold of yours to about a million people all over the country!”
What does the following passage show in Roald Dahl’s novel Charlie and the Chocolate Factory?