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Thats a bone seeker. Currently working with Am241, Pu239, U235. Mostly an inhalation issue as they are alpha particles, though Am241 has a good gamma. Sr-90 on the other hand is a Beta emitter, Betas are more prone to enter your body through your eye lens, hence the poly carb safety glasses.
I imagine one could snort some Sr-90. But I would not rail it on the back side of the sofa. Where you seem to be snorting something.