You Can't See It, But It's There.....
a: Carbon monoxide ~
b: a ghost
What: "Carbon monoxide is like a ghost in that it's difficult to prove its presence -it's colorless, odorless, and tasteless. None of our 5 senses can detect it's presence. You have to have a detector."
Writer: Wendy Sue Swanson, MD, MBE
Date: Jul 22 2013 7:13 PM
# 3428 Critique Analogy