User blog comment:IamJakuhoRaikoben/Chapter 473: Red Lightning, Review./@comment-5143845-20160215212107/@comment-7418318-20160216092753

That's not how MBP work.

If MBP worked through absorbing ethernano, normal (non-mage) Humans wouldn't have any problems from coming into contact with them, but in Hargeon more than 100 non-mages died from breathing in MBP.

Also they don't derive power from anywhere. They aren't more powerful in some instances and less in other. They are simply toxic particles that damage the bodies and destroy magic around them. They were literally called poison.