Dear voltage is a force or u can say a medium which is called electrtomotive force,which drives a current.so its not a thing for disaster.where current is actually a thing which is a power. voltage is a potential energy where current is kinetic energy .current is flow of electrons and these electrons are the factor which make our body burn or dead. only voltage cant do a thing because it has no electrons.
The voltage necessary for effecting on human depends on the current through the body and the duration of the current. Ohm's law states that the current drawn depends on the resistance of the body. The resistance of human skin varies from person to person and fluctuates between different times of day. The NIOSH states "Under dry conditions, the resistance offered by the human body may be as high as 100,000 Ohms. Wet or broken skin may drop the body's resistance to 1,000 Ohms," adding that "high-voltage electrical energy quickly breaks down human skin, reducing the human body's resistance to 500 Ohms."