The ornamental design for a diffusingevaporator of activesubstances, as shown and described.
FIG. 1 is a top, rear and left side view perspective illustration of a diffusing evaporator of active substances, according to an aspect of the new design;
FIG. 2 is a left side new illustration thereof;
FIG. 3 is a top view illustration thereof;
FIG. 4 is a front view illustration thereof;
FIG. 5 is a bottom view illustration thereof;
FIG. 6 is a front view illustration thereof; and,
FIG. 7 is a bottom, rear and right side perspective view thereof.
The broken lines depict portions of the diffusing evaporator of active substances that form no part of the claim.