Exposure to toxic substances refers to coming into contact with harmful chemicals that can negatively affect health. These substances can be found in various environments, including workplaces, homes, and natural settings. Common sources include industrial chemicals, pesticides, heavy metals, and certain household products. When individuals are exposed to these toxins, they may experience a range of health issues, from mild irritations to severe illnesses. The effects depend on factors such as the type of substance, duration of exposure, and individual susceptibility. Understanding and minimizing exposure to toxic substances is crucial for maintaining public health and safety.