The ornamental design for an odorcontrollingsuspension, as shown and described.
FIG. 1 is a perspective view of an odor controlling suspension, showing the new design in an environment in broken lines;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a first side view thereof; and,
FIG. 5 is a second side view thereof.
The broken lines shown in the figures are included for the purpose of illustrating portions of the odor controlling suspension and do not form part of the claimed design.