How Tear Gas Affects Your Body (Video) (IMAGE) American Chemical Society Caption 2-Chlorobenzalmalononitrile, better known as CS gas, is one of the most common tear gases used in the United States today, but did you know it's not actually a gas? We break down how it works, a bit of its history and the best ways to recover if you're hit with it. A reminder: We're not doctors! Please contact yours with any concerns: https://youtu.be/agXnXHfGc3k. Credit The American Chemical Society Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.