A study was done to determine the CO2 levels in mask-wearing children and the results were of course what anyone with an ounce of common sense would predict: that CO2 levels were many times that of non-mask wearers and often greatly exceeded thresholds of what would be considered safe. Elevated CO2 levels are know to cause a myriad of health problems. Only stupid leftists will dispute this and continue to wear their masks. Perhaps they will become brain-dead.

Experimental Assessment of Carbon Dioxide Content in Inhaled Air With or Without Face Masks in Healthy Children: A Randomized Clinical Trial | Pediatrics | JAMA Pediatrics | JAMA Network