It becomes a very dangerous ball when it’s aimed at the helmet of a batsman because it can sometimes be nasty and life-threatening as well.
We have already lost one of the emerging talents from Australia recently named Phil Hughes who died at an early age because the ball hit his head and he died on the spot. Steve smith was lucky to survive this delivery because the ball had hit his helmet very hard but the impact was such that it took some time for Steve smith to recollect himself and continue playing. The safety measures have been taken by the ICC to create more safety measures for the sport but these are accidents and can become fatal at any point in time. We hope that no player has to face such situation ever and they remain safe and sound during their career and even after that.