N95's are Respirators and not just masks, as Mr. Freedman pointed out. They require proper fit testing for each individual - after medical clearance - to ensure they work properly. AND they are not approved for use by children.

https://bartondunant.medium.com/barton-dunant-emergency-management-training-and-consulting-recommends-strict-adherence-to-fda-6e1edb06b96a