Many human beings consider that those mask have the identical filtering performance as N95 mask meant for scientific use, however it is now no longer the case. External Nose Clip N95 mask with nose cushion instead of keeping your masks in drawers or boxes where they are free to move around. Harley L-288 N95 Mask NIOSH Approved Harley l-288 NIOSH N95 + pinch nose clip the Centers for Disease Control ( CDC ) recommends that everyone wear an N95 mask when in contact with others. Primarily, it's your very first line of defense versus pandemic C0VID-19. As an example, N95 masks do not guard versus smoke, dirt, or even fumes. Plant pollen.