Body odor and skunk farts, lol
I don't think a net is going to help much. Last time I left CJxSB males in the main tent
, the pollen coverage was so outrageous that it collected on every surface available. I had to take apart lighting fixtures to vacuum out the insides, lol. It got inside everything, every tiny little opening might as well have been a barn door as far as that pollen was concerned
Most of the time, if I don't have another place to grow out the males by themselves I will chop them before they release pollen and put them in water until the pollen starts dropping, then collect it on glass or paper like Chimera outlines in this thread
. By doing that, I now have enough pollen stored to last me for years, from several different varieties.