Health risks of French police tear-gas grenades examined amid renewed protests

During unrest on October 17, French police fired CM6 and GM2L tear-gas grenades that disperse the solid irritant CS as an aerosol. The Institut national de recherche et de sécurité explains that exposure triggers tearing, burning sensations, coughing, breathing difficulty and occasional nausea or vomiting, with most symptoms fading after leaving the contaminated area. Although the reactions are usually brief, documented incidents have included severe asthma attacks, eye injuries and skin burns.

A comprehensive 2017 scientific review covering 31 studies from 11 nations recorded 5,131 injuries associated with CS and pepper spray, some resulting in lasting damage. The government has announced a large-scale security operation for the upcoming protest day on October 24, reviving public debate over the weapon's safety.