The ornamental design for a scenteddisc, as shown and described.
FIG. 1 is a plan view of a first side of a scented disc in accordance with a preferred embodiment of the claimed design;
FIG. 2 is a perspective view of the first side thereof;
FIG. 3 is a side elevational view thereof;
FIG. 4 is a perspective view of a second side thereof; and,
FIG. 5 is a plan view of the second side thereof.
The broken line showing of concentric circles in FIGS. 4 and 5 is for the purpose of illustrating environmental structure and forms no part of the claimed design.