they think so much hate and investigate and dave lindorff is michael. thank you for having me on. there's concern the use of tear gas could hugely increase the spread of covert 9000 among protesters issue has been highlighted in an open letter that was signed by almost 1300 u.s. public health and medical professionals this comes amid the nationwide protest against racism that's been raging for 2 and a half weeks. opposing the use of tear gas smoke or other responders 3 irritants which could increase risk for covert 19 by making the risk of tree tracked more susceptible to infection exacerbating existing inflammation and in juicing coughing apart from coronavirus related health concerns there are other issues as well prolonged exposure to the gas or a large dose especially in a closed setting can lead to blindness can also leave severe chemical burns of the throat and lungs even deadly risperidone failure philadelphia's police commissioner still argues riot control agents remain the safest way of dispersing crowds the deployment of tear gas was a means to safely diffuse a volatile