The ornamental design for an airfiltrationmask, and shown and described.
FIG. 1 is a front and left side perspective view of the air filtration mask.
FIG. 2 is a rear and right side perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a rear elevation view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line showing of a person, portions of the article, and accessories to the article is included for the purpose if illustrating environmental structure and forms no part of the claimed design.