👉 Clark fumes, also known as chloroform vapors or carbon tetrachloride vapor, are toxic byproducts that can form when chlorinated solvents like carbon tetrachloride react with water or other substances. These vapors are highly volatile and have a distinctive sweet, almost fruity odor, which is why they earned the name "Clark fumes." Exposure to even low levels of these fumes can cause severe health issues, including dizziness, headaches, nausea, and in more serious cases, neurological damage, respiratory failure, and even death. They are particularly dangerous in enclosed spaces where ventilation is poor, making them a significant occupational hazard in industries that use chlorinated solvents for cleaning and degreasing.