FIG. 1 is a perspective view of an inhalation mask showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being identical;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.

The undisclosed inner surface of the inhalation mask is unornamented and follows the contours of the outer surface as indicated.