The ornamental design for a sanitarymask, as shown and described.
FIG. 1 is a perspective view as if worn on a face, of a sanitary mask, showing our new design;
FIG. 2 is a front view of the sanitary mask folded in half and flat, the rear view being a mirror image thereof;
FIG. 3 is a top plan view of the sanitary mask folded in half and flat, the bottom plan view being a mirror image thereof;
FIG. 4 is a left side view thereof; and,
FIG. 5 is a right side view thereof.
The even-length broken lines shown in the drawings represent portions of the sanitary mask that form no part of the claimed design. The uneven-length broken lines shown in FIGS. 1 and 2 represent a boundary between the claimed portion and the non-claimed portion of the sanitary mask and form no part of the claimed design.