I'm having the same issue Big...two plants of different strains growing indoors, the one started getting this oily sheen on the leaves plus these specs of like dandruff type stuff...it looks like light coloured weiners under the pocket scope. Weirdest thing...I put the one outside 5 weeks into flower, nice plant...until this happened. I flushed it (I know, bad idea 5 weeks into flower, but?), then it rained for three days...killed it. Now, the other plant has greasy leaves and the specs of whatever...nobody knows WTF it is. After this plant is done, if it even lives to finish a few more weeks, and I just kight have to disinfect my little basement grow space. One thing after another...a couple years back, I had a plant decided to be a male. I was going to keep it on the other side of the yard, ten wait until it had a zillion pollen balls on it and keep it for an experiment. I was going to wait until about 5 days before harvest, and douse it with pollen...apparently makes her go into overdrive producing THC filled seed husks but not yet a seed. Well that didn't happen, because it fertilized everything...except one that wasn't ready yet. (Than God!)
Ya guys & gals, unless you know what you're doing as far as producing seeds rather than buds with no seeds, as soon as you see it's a male plant...KILL IT ON SIGHT. Don't even think about keeping it around, like the two really nice plants I had in veg outside growing early this summer...beauty plants I started inside during the winter, bushy as hell, a hundred colas (well, lots)...MALES. Usually males are tall and spindly, but not these assholes. My wife kept saying "Get rid of that male plant Babe...remember what happened last time you kept a male plant around here"
I read this infamous gardener/botanist, she said, "You can't call yourself a true gardener until you've killed at least a thousand plants."