Wilma and Betty having to self-quarantine after catching the measles was not a joke. When this episode was broadcast, the first measles vaccine was a year away from release.
In the first half of the episode, the cake is called the Upside Down Flint-Rubble Bubble Cake. In the second half of the episode, it is called an Upside Down Flint-Rubble Double Bubble Cake.
ABC originally broadcast this episode in black and white.