It can also cause irritation, redness and swelling of your eyes. Throat irritation, sinus pain and coughing are other effects that may be seen. Death occurs only after exposure to a very large amount of mustard. Symptoms usually appear 4 to 8 hours after mustard exposure, but may take up to 24 hours to appear. Exposure to GB and VX effects your nervous system.
Symptoms appear within minutes after exposure to nerve agent vapor.
Exposure to a tiny amount of vapor can cause pin point pupils, dim or blurred vision, eye pain, a runny nose and shortness of breath. Exposure to a moderate amount of vapor can cause muscle weakness, nausea, vomiting and diarrhea. Exposure to large amount of vapor can result in interruption of breathing, muscle weakness, loss of consciousness, convulsions and death. If you are exposed to a small dose of chemical, you will not have any health effects and will not need treatment. For example, if you have no symptoms after you have traveled through clean air for 15 minutes after exposure to GB vapor, you will not need treatment.