So the nanobots will also kill the person’s relatives
So how closely related does the relative have to be to the person the nanobots are coded for? Children? Nephews/Nieces? Cousins?
The movie isn’t very clear on this (and yes it’s all so that in the end Bond looks like he’s sacrificing himself for his daughter) and the thing is if you trace DNA back far enough through the fossil record basically every single organism on Earth is related to each other which would mean that every single nanobots would kill every single living creature on Earth. The movie didn’t do a very good job in defining what constitutes close enough matches in DNA for the nanobots to work which makes this entire plot point rather silly.