Note further N95s aren't recommended for young children (IIRC it's 8 at the youngest) and KN95s have been found to be worse than cloth if there are 3mm holes. Surgicals present a similar problem. Without fitting, there isn't really a practical way to mask very young children (as opposed to teens).

Experimental investigation of indoor aerosol dispersion and accumulation in the context of COVID-19: Effects of masks and ventilation
The ongoing COVID-19 pandemic has highlighted the importance of aerosol dispersion in disease transmission in indoor environments. The present study experimentally investigates the dispersion and b...
aip.scitation.org