Comment by Ukv

From what others have posted, this sample was apparently 35 nanograms salvaged from a smoke detector - and was sold by the online store embedded within an acrylic cube labelled "plutonium" in addition to still being in the original casing from the smoke detector.

To me it seems like that's strictly less likely to cause a Goiânia incident than when it was just in an old smoke detector that could've potentially be thrown out without consideration.