Dirty, of course I hope I'm wrong but these little spots seems to me an initial botrytis attack (already contrasted by natural plant's defences). Mold sometimes attacks leaves with these brown spots and necrosis under page and this not means the also buds will be affected. Botrytis and other fungi are always present in both plants and humans, sometimes our defences fall down and pests rise. I've observed these spots lotnof times in my all runs but only few plants eventually they showed bud rot. There is no living or plant being completely free from disease.