It's about 3.5-4 smoke detectors worth. This source contains about 3.5 ucuries; a typical smoke detector contains 1 ucurie or less. I think the biggest danger

It's about 3.5-4 smoke detectors worth. This source contains about 3.5 ucuries; a typical smoke detector contains 1 ucurie or less. I think the biggest danger is that most people know not to dig around in the inside of a smoke detector if they don't want to end up like the Radioactive Boy Scout, but some random thing dropped at a swap -- you might start prying open, and if you eat/inhale the Americum-241 by accident, it's radiotoxic.