What are your recommendations for people with small faces? Because I’ve never encountered an N95 that felt like it fit.

Check pharmacies; most have been replaced by chains, but some independent pharmacies are still around, and will have a number of home staples.

Ethnic markets in general are a good option for finding locally-owned shops, but they’re going to differ in terms of what staples they actually carry.

Those devices absolutely need regular cleaning, because they will get moldy and will spew dirty air everywhere.