I would not hesitate to eat capped honey from a Varroa dead out. Honey does not spoil. Pharaoh?s tomb contained honey 2,000 years old, unspoiled. Now I am not saying I would eat that 2,000 year old honey, but maybe a taste, just cause.
As far as I am concerned, all honey is exposed to Varroa, not directly, but Varroa is in the hive, especially the brood area.