Sorry buddy, but i got some corrections, it is a widely held misconception that the original color of coca-cola was green.
this one i'm not too sure about, the song ended "atishoo-atishoo, we all fall down' because sneezing was a common symptom that usually happened in the later stages of the plague..
as a kid we were never allowed to play ring around the rosie because it was disrespectful to all the people that had died from the disease.