If you kill the nest, then the eggs and live crap in there will rot and stink.
If you wait until the nest is abandoned and used up then it won't stink. If you wait too long a bird will rip it up.
I've collect a lot of them. One like Smossy's I collected when it was very full of bald faced hornet bee's.
I carefully cut the branch and gently set the nest in the back of the truck then hurried up and slammed the door shut. 10 miles down the road and the bees were mostly gone
