The N-95 masks are not supposed to be used anyway. They only protect the person wearing them . They don’t protect others because when you exhale it is not filtered.
Not all N95 masks have the exhale valve. Years ago I went to the N95 masks with the exhale valve because I was doing some rigorous sanding grinding on fiberglass
That only applies if the mask has an exhale valve. Many N-95 variants don’t have an exhale valve.