Hmm. You mean that maybe that isn't the honeydew dripping from my lemon tree?
It has every kind of scale and mealybug known to man!
As to the sunburn; some orchids thrive on a bit of it. Not Catts, for sure, but some Laelias, and my Gerberara do their best when the leaves are turning red. Of course I don't have the humidity issues here, so black rot doesn't go along with it.