> For a "dirty bomb", any amount will do, of course. By that logic, one smoke detector is enough? I probably wouldn't want to eat a smoke detector, but if one

> For a "dirty bomb", any amount will do, of course. By that logic, one smoke detector is enough? I probably wouldn't want to eat a smoke detector, but if one was added to a bomb I probably wouldn't be very concerned about the impact of the smoke detector.