source control
... that cloth face masks are considered source control but they are not considered personal protective equipment?
... that <a href="./Cloth_face_mask" id="mwB8g" rel="mw:WikiLink" title="Cloth face mask">cloth face masks</a> are considered <b id="mwB8k"><a href="./Source_control_(respiratory_disease)" id="mwB8o" rel="mw:WikiLink" title="Source control (respiratory disease)">source control</a></b> but they are not considered <a href="./Personal_protective_equipment" id="mwB8s" rel="mw:WikiLink" title="Personal protective equipment">personal protective equipment</a>?