When they are inhaled this icon also covers chemicals that could cause you to have an allergic skin reaction after subsequent exposures and some of these chemicals could have an acute affect on your help that while less severe than those identified by the skull and crossbones pictogram. Still require you to utilize for cautions so you don’t suffer any ill affects chemicals that have a narcotic affect on your central nervous system are also categorized in the exclamation mark group as our any products that have a harmful effect on the ozone layer although OSHA done not enforce that you said this pictogram for ozone damage because it done not directly affect the help that workers.