Jo and Carter pull up to the residence of one Dr. Mandle, who complains that his home lab was broken into by the "dog lunatics" at GD. "They'll do anything to win!" he says. Jo asks what Mandle has in his lab that the dog lunatics would be interested in. "Synthetic mucus," Mandle says. Silence. Then, Carter: "Why?" Mandle probably gets this question a lot, so he immediately and indignantly responds that his "brew" of synthetic mucus can stop any and all airborne pathogens from entering the human body. I'm all for progress and everything, but this seems like a bad idea. If we aren't exposed to germs, then we won't build up our immune systems. And if we don't build up our immune systems, then we all get killed when the European settlers come. Not good. Mandle thinks the dog lunatics want to use his mucus to "create a more realistic dog nose." But the fact is, he doesn't even have much by way of proof that anyone broke into his lab in the first place. There's a broken beaker on the floor. That's it. He says if the wrong beaker had been knocked over then the results would have been catastrophic, with synthetic mucus everywhere. He makes a little mucus volcano to demonstrate this to Jo and Carter, who look like they were happier remaining ignorant. I'd just like to say that Mandle's mucus is green, which is an unhealthy color for mucus. It's also steaming. Yuck. Carter sends Jo and Mandle to the rest of the house to see if anything is missing while he stays behind in the lab for reasons unknown to me. Why would you want to hang out with mucus, except to forward the plot? Mandle warns Carter not to touch anything on his way out. Carter obeys him to the letter, and doesn't even touch the beakers when they start rattling around because of the earthquake. "Oh, that's bad," Carter says, as Mandle's beakers go flying off their holders and crash on the ground. Carter is covered in a mucus explosion.

After the credits, Jo and Mandle run into the lab to investigate the loud glass breaking sounds they heard. They find Carter covered in green glop. Mandle is furious while Jo is kind of amused, which is her reaction to most things. Mandle says Carter ruined his entire batch of "misty green." Carter says he didn't touch anything; the earthquake knocked the beakers over. This draws a quizzical look from Mandle and an amused one from Jo, as even though they were but fifty feet away, they didn't feel a thing.