Dear Stockers, this is a very interesting way of looking at it: "does not like to be burned" - I like the image very much and had me thinking.
I cannot give you a fully satisfying answer, however my first approach with vapor in retrospective was a lot less angry, to use your words, than my previous burnings. I did not attribute it to the different approach at the time, but you got me thinking - thanks! I will be more considerate and observing the next time I feel like invting sally again
Maybe someone can shed more light with their experiences!