Bad bee's
As to the nasty bee's, they do say that a second mating of a inseminated
queen colonys can be nasty.
As far as smoker fuel goes, I use rotten oak, dry lavender cuttings and or dry
bay leaves, works for me
Hole closed
I use glass crown boards the hole is covered with a piece of glass, if you put a wire mesh over the hole they gum it up, The hives are on mesh floors so they don't want a through draft.
John
Its the right time of the year for dandelion's, foul smelling nectar, once it becomes mature it stop smelling, take a frame out and smell the stores, hopefully that's the problem.
Regards
John