The ornamental design for a nasalirrigator, as shown and described.
FIG. 1 is a front and top perspective view of a nasal irrigator, showing our new design;
FIG. 2 is a rear and bottom perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a right side elevation view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is an enlarged perspective view of detail “9” identified in FIG. 2.
The dash lines in the figures illustrate portions of the nasal irrigator that form no part of the claimed design. The dash dot dash lines in FIGS. 2 and 9 are for the purpose of illustrating the enlarged view indicators and form no part of the claimed design.