Indeed, pretty cool. That's the beauty of fundamental research, you can let other people worry about health considerations~~

Kinda what happened with carbon nanotubes. Certain kinds of nanotubes have been shown to have asbestos-like health risks when inhaled. Now the CNT people have moved on to graphene, which seems to be less hazardous in terms of health risks, but who knows? The field is still in its infancy, considering it has only been around for 20 years. Long-term health effects are likely still to be determined.