The risk of mask-wearing for kids simply outweigh the benefits.

Dr. Marty Makary, professor at the Johns Hopkins Bloomberg School of Public Health, wrote this about the adverse effect of masks on kids for the Wall Street Journal:

“In March, Ireland’s Department of Health announced that it won’t require masks in schools because they “may exacerbate anxiety or breathing difficulties for some students.” Some children compensate for such difficulties by breathing through their mouths.

Chronic and prolonged mouth breathing can alter facial development. It is well-documented that children who mouth-breathe because adenoids block their nasal airways can develop a mouth deformity and elongated face.

From:

Why Kids (And You) Shouldn’t Be Forced to Mask