Extracting DNA from the air – DNA evidence of human occupancy in indoor premises

I wouldn't be surprised that some some agencies *cough*Mosad*cough* are gathering DNA of leaders of all countries, and analyzing them, and potentially building bioweapons to target them. It looks like all you need to do is to get the HEPA filter from the room where the target was .

This sounds very expensive, of uncertain efficacy, and if you use an engineered organism, it will likely be detected if you use modified DNA.

I accept an agency like Mosad or the CIA would attempt it though. CIA tried so many crazy schemes to try to kill or embarrass Castro and failed every time. Mosad loves balls to the walls evil schemes too, like the pagers. It would be one of those situations where they leave a stupid trace and everyone knows it's them and they are untouchable so they don't care and even enjoy the attention.