Humidifier

FIG. 1 is a front-right top perspective view of a humidifier showing my new design;

FIG. 2 is a rear-left bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines in the figures are included for the purpose of illustrating portions of the humidifier and do not form any part of the claimed design.