I saw a meme of how if there was a magic item that gave you a bonus to prevent disease, you’d wear it all the time. Well, I don’t know of such an item so I figured now was a great time to create one.
Wear your face masks. Wash your hands. Social distance.
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Face Mask of Disease Prevention
Aura divination; CL 1st
Slot face; Price 300 gp; Weight 0.5 lbs.
Description
When this black cotton scarf is tied over the nose and mouth, the wearer receives a +1 resistance bonus to saving throws against disease.
Construction
Requirements Craft Wondrous Item, guidance; Cost 150 gp
Jon Brazer Enterprises 
Really feel this should be based off the spell resistance instead of guidance
Spell resistance is a higher-level spell, making the item cost more. This way it is a cheap item that anyone can afford.