Toxic materials can be classified into four broad category chemical, biological, physical and radiological. One of the example of chemical toxic substance is chlorine. Common source of chlorine poisoning is mixing of chlorinated bleach with acid containing washing agents. Chlorine gas poisoning can be acute or chronic. Acute symptoms include shortness of breath, cough. Lungs produces crackles sound. Nose irritation, sneezing, burning sensation is very obvious which is followed by eye irritation, chemical burning or conjunctivitis.