That's weird, isn't it? Looks a bit like caterpillar poo. In two pics out of three, I can find leaves eaten by what looks like a caterpillar. Just shake it off, then use tweezers to remove any more. Don't let it rain on it before you clean it off... that's when I wouldn't want to smoke it. Now is fine if you remove it all. You can even dunk your branches in a large bucket of water and shake off any remaining undesirables at harvest. Then shake off excess water, hang in a fan or breeze out of direct light to dry the water off. Then dry, cure and smoke as normal. It should be fine. Good luck and well done getting your plants to this stage.