Same way you do asbestos remediation. Enclose the area, filter the air, create a clean room around the entire area.

Maybe in the future you laser-atomize every spec that floats past the actor inside an 8ft cube. Who knows?

I don't think it'd be practical to switch overnight - much of our societal infrastructure needs re-engineering for sustainability which will take time - perhaps a gradually increasing percentage of externalized costs can be integrated over time. It'd be real progress toward a Venus Project style resource based economy.