NOT KNOWN FACTUAL STATEMENTS ABOUT LAUGHING GAS CHOCOLATE BARS

While in the Betty Boop cartoon "Ha! Ha! Ha!" opens with supposedly Max Fleischer's hand drawing Betty Boop on a sheet of paper. When Max leaves the studio, Koko comes out with the inkwell for the final time, and starts feeding on the sweet bar Max had still left to the table. Almost immediately he develops a toothache, so Betty draws a dentist roo