Translations:AY Honors/Basic Sewing/Answer Key/88/en
From Pathfinder Wiki
To avoid potential confusion between a DIY mask and a medical grade mask, Johns Hopkins insists that you not make a mask from a solid color (especially not solid blue or solid white). If the only material you have on hand for making a mask is solid, consider tie-dying your material before using it to make a mask. Another alternative would be to label the mask as NOT MEDICAL GRADE with a Sharpie. You can do this on the inside if you like.
