Since this one is copied off of a design already found in insects, I think we already deal with this pretty well. How your body handles such dust is simple. We

Since this one is copied off of a design already found in insects, I think we already deal with this pretty well. How your body handles such dust is simple. We coat it in mucus, and the mucus comes up and out (runny nose, spitting, etc). The reason why asbestos causes problems is that it acts like a needle, and keeps running into things. These are short enough that they shouldn't do that.