Carbon Tetrachloride can affect you when breathed in and by passing through your skin.
Exposure can cause dizziness and lightheadedness rapidly leading to unconsciousness and death.
It can make the heart beat irregularly or stop. It can damage the liver and kidneys enough to cause death. It is used as a solvent and in making fire extinguishers, refrigerants, and aerosols. Definitions are attached. Exposure to hazardous substances should be routinely evaluated.