FIG. 1 is a top perspective view of a fragrance diffuser according to one embodiment of the present design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a first side elevation thereof;
FIG. 4 is a second side elevation thereof;
FIG. 5 is a third side elevation thereof;
FIG. 6 is a fourth side elevation thereof;
FIG. 7 is a top view thereof;
FIG. 8 is a bottom view thereof;
FIG. 9 is a top perspective view of the fragrance diffuser according to a second embodiment of the present design;
FIG. 10 is a bottom perspective view thereof;
FIG. 11 is a first side elevation thereof;
FIG. 12 is a second side elevation thereof;
FIG. 13 is a third side elevation thereof;
FIG. 14 is a fourth side elevation thereof;
FIG. 15 is a top view thereof; and,
FIG. 16 is a bottom view thereof.
The areas within broken lines in the drawings illustrate portions of the fragrance diffuser that form no part of the claimed design.