Hive E is very cross. I think that it may be low on stores. I tried to take the lid off to feed it. They went for me in full attack mode. Buzzng my head and my hands. My legs had at least a dozen bees attached, all trying to sting me.
The fear is my own fault. My body is well covered in a bee suit. My hands are fairly well covered in leather gloves (but nitrile over the top would be better). It's my ankles. They sting my ankles. I went back in and put on thick socks.
I took the lid off and put a good dollop of set honey on the crown board. I was covered in angry bees. I put the lid on and ran round the corner. These bees stay angry and they follow for over 20 metres. I did an I'm covered in bees dance. Still covered. I hid in the corridor which leads to the roof and swept them off. Eventually I got them all off.
Cautiously I went back to the corner to collect my things. Oh dear. In my haste I didn't put the lid on properly. I walked back to the hive, replaced the lid and ran around the corner again. Once more the dance. Once more the lengthy removal of a dozen or more bees. Finally, I was free to leave.
Before I left I had a quick look at all of the floors. Hives C, E and F all showed very heavy Varroa fall. Hives D and G had very few Varroa, but I might have cleared the floor more recently than the others.
Edit: there was a very noticeable smell when I opened Hive E. I can't describe it but it wasn't nectar or one of the normal smells. I assume that it's the smell of alarm.