Are there face masks that should not be worn during the covid-19 pandemic?

Are there face masks that should not be worn during the covid-19 pandemic?

Surgical Face Mask Surgical Face Mask (Umbrella EUA) General Face Mask
(During Public Health Emergency)
General Face Mask
(During Public Health Emergency)
KN95 Respirator
(During Public Health Emergency)
KN95 Respirator
(During Public Health Emergency)
N95 Repirator
FDA Product Code FXX QKR QKR QKR QKR QKR FXX
Classification Name Mask, Surgical Enforcement Discretion Enforcement Discretion Enforcement Discretion Enforcement Discretion Enforcement Discretion Mask, Surgical
Regulation Number 878.404 N/A N/A N/A N/A N/A 878.404
Premarket Notification 510K N/A N/A N/A N/A N/A Exempt
US Standards ASTM F2100-19 ASTM F2100-19 ASTM F2100-19 ASTM F3502-21 ASTM F3502-21 ASTM F3502-21 NIOSH
China Standards N/A N/A N/A N/A GB2626-2019 GB2626-2019 N/A
Wearing Type Earloop/Tie-On Earloop/Tie-On Earloop/Tie-On Earloop/Tie-On Earloop Headband  Headband
Layer 3ply/4ply 3ply/4ply 3ply/4ply 3ply/4ply 5ply 5ply 5ply
Shape Flat Flat Flat Flat 3D 3D 3D
Best Performance Level 3 Barrier* Level 3 Barrier Level 3 Barrier Level 2**
(Higher Performance)
Level 2
(Higher Performance)
Level 2
(Higher Performance)
N95
Protection Rank 4 5 6 7 3 2 1
Cost-Effective Rank 2 2 1 3 4 5 6

Tips:
Headband is better than Earloop
4ply is better than 3ply (Flatmask only)

QKR Defination
Face mask is intended to be worn by general public or healthcare personnel and excludes air purifying respirators. The mask covers the user's nose and mouth and may or may not meet fluid barrier or filtration efficiency levels. The device is either subject to the Enforcement Policy for Face Masks, Surgical Masks, Barrier Face Coverings, Face Shields, Surgical Masks, and Respirators During the Coronavirus Disease (COVID-19) Public Health Emergency, available at FDA Enforcement Policy, provided that the device does not create undue risk by following the recommendations for this device type outlined in the guidance, or to the Face Mask Umbrella EUA, available at FDA.

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