The same filter and blower used for the Dental Mask can be connected to a hose and hood to give toddlers too small for other mask options some protection in environments with poor air quality, use 7750+ instead of 7740+ if you want minor reduction of gases and odors also Parts list
1 hood a.co/d/2nqnVOR

I’m starting assembly with the easiest steps The nose snorkel mask is the first main component, the silicone seal slides off