The ornamental design for a side indentnasalairway, as shown and described.
FIG. 1 is a perspective view of a side indent nasal airway showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a perspective view thereof, shown in an environment of use.
The broken lines showing the positioning of the user and breathing airway after the insertion into the nostril on the user's face are for the purpose of illustrating environmental structure and form no part of the claimed design.