Measles and TB evolved from diseases of our cattle, influenza from a disease of pigs, and smallpox possibly from a disease of camels. The Americas had very few native domesticated animal species from which humans could acquire such diseases.
I distrust camels, and anyone else who can go a week without a drink.
Clouds do not really look like camels or sailing ships or castles in the sky. They are simply a natural process at work. So too, perhaps, are our lives.
My mom once lost track of me at the zoo and when she found me I was lecturing a man about the difference between dromedary and Bactrian camels. I was about 3 1/2.
I have met guys who work the overnight shift at 7-11, selling Slurpees and Camels to insomniacs who have more introspection than a lot of people in the mainstream media.