drawing. gas mask

air airborne apparatus army attack backdrop background biological black breath cartoon chemical closeup danger defense device disaster doodle drawing drawn ecology equipment face filter freehand front gas graphic hand helmet icon illustration inhaler ink isolated lab life mask military muzzle nosebag old outline oxygen paper pen picture poison pollution protective radiation radioactive respirator retro risk rubber safe safety scribble security sign sketch sketchy soldier space style symbol terrorism text toxic uniform vector view vintage virus war white