I did a Google search for bone dust hazards and came up with very little specifically relating to breathing bone dust, but any dust inhaled into the lungs is potentially a hazard. That being said, this is what I have been told by a couple of people that should know; The tiny particles of bone, when inhaled, stick to the tissues in your lungs (as does about anything inhaled). Being organic and foreign to the body, they can be the start of an infection. I'm no doctor and I don't even play one on TV
but I plan to ask my doctor next time I see him! Anyway, the point is, why take a chance? Dust masks are a lot cheaper than a hospital stay or even a doctor's visit and a lot less of a nuisance than a lung disease
