Toxic gases are harmful substances that can cause serious health issues when inhaled. They can come from various sources, including industrial processes, vehicle emissions, and natural events like volcanic eruptions. Common examples of toxic gases include carbon monoxide, sulfur dioxide, and chlorine. Exposure to these gases can lead to symptoms ranging from headaches and dizziness to more severe respiratory problems. Many toxic gases are colorless and odorless, making them difficult to detect without specialized equipment. Safety measures, such as proper ventilation and gas detection systems, are essential in environments where these gases may be present. Understanding the risks associated with toxic gases is crucial for protecting public health and safety.