so Liz was careful to take lunch at a different time.
this week i have gone happily walking about in the sunshine. but it has rained on her when she went out!
conclusion has to be that it is a virus. weather really is in the hands of certain people, as you have always suspected anyway. however it is contagious; you get over it after a bit and someone else catches it. just observe and you will see the truth of this. don't tell anyone, they will think you are crazy.