A man and a woman were sitting beside each other in the first class section of a airplane. The woman sneezed, took out a Kleenex, gently wiped her nose, then visibly shuddered for 10 to 15 seconds. The man went back to reading. A few minutes later the woman sneezed again, took out a tissue, wiped her nose, then shuddered violently once more. Assuming that the women had a cold,..