Tested out this cloth cover for 3M Auras today from LoveTheLookStudio. I'll be grabbing more. They didn't make it any harder to breathe in and the way they clip on doesn't seem to interfere with the seal of the mask as far as I can tell. Very comfortable and I noticed people were slightly friendlier to me in it.
Etsy: https://www.etsy.com/listing/1832506808/aura-mask-cover-transform-a-3m-n95-mask?bes=1&sts=1
Video of someone testing them: https://www.youtube.com/watch?v=Y5oCmZUir2w&t=303s
