Yes, and if you suspect someone is going to legally try unzipping it, you are probably legally required to inform them that it does contain a zip bomb. And if

Yes, and if you suspect someone is going to legally try unzipping it, you are probably legally required to inform them that it does contain a zip bomb. And if you have the zip bomb on the USB drive with the intention to damage a law enforcement system, things change. Just like you are allowed to have a gun, but you can't walk into a random place carrying a gun.