The ornamental design for a aromatherapydiffuser in the shape of a bambooshoot, as shown and described.
FIG. 1 is a top plan view of a aromatherapy diffuser in the shape of a bamboo shoot showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a front elevation view thereof; and,
FIG. 7 is a top, front perspective view thereof.
The features shown in broken lines in the various figures are shown for illustrating environmental structure and forming no part of the claimed design.