Metallic vapors are VERY dangerous , and may be one of the principal causes of the medical issues that first responders ( fire , police , etc. ) are facing .
Early in my career , a neighbor had brought home some instrument mercury . His small daughter drank some of it . We were horrified , imagining horrendous health and mental problems would follow . Their pediatrician laughed it off , saying in would just pass through her gastro-intestinal system very rapidly , and that the real danger was in the vapor phase , inhaled and passing through the lungs into the bloodstream . Nanoparticles can pass across the barrier into the brain and create huge problems to mental processes .
Chromium used in replating bumpers etc. is so dangerous that the price of doing so in restorations is becoming extremely expensive .