List of 30 studies showing face masks are useless against COVID-19
[increases it slightly!]
https://www.medrxiv.org/content/10.1101/2021.05.18.21257385v1.full-text
https://swprs.org/face-masks-evidence/
https://pubmed.ncbi.nlm.nih.gov/29395560/
https://pubmed.ncbi.nlm.nih.gov/32590322/
https://pubmed.ncbi.nlm.nih.gov/15340662/
https://pubmed.ncbi.nlm.nih.gov/26579222/
https://pubmed.ncbi.nlm.nih.gov/31159777/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/
https://www.medrxiv.org/content/10.1101/2020.04.01.20049528v1
https://www.medrxiv.org/content/10.1101/2020.03.30.20047217v2
https://www.nejm.org/doi/full/10.1056/NEJMp2006372
https://jamanetwork.com/journals/jama/fullarticle/2749214
https://www.cmaj.ca/content/188/8/567
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5779801/
https://pubmed.ncbi.nlm.nih.gov/19216002/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971/
https://academic.oup.com/cid/article/65/11/1934/4068747
https://www.jstage.jst.go.jp/article/bio/23/2/23_61/_pdf/-char/en
https://link.springer.com/article/10.1007/BF01658736
https://www.journalofhospitalinfection.com/article/0195-6701(91)90148-2/pdf90148-2/pdf)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2493952/pdf/annrcse01509-0009.pdf
https://web.archive.org/web/20200717141836/https://www.cidrap.umn.edu/news-perspective/2020/04/commentary-masks-all-covid-19-not-based-sound-data
https://www.nap.edu/catalog/25776/rapid-expert-consultation-on-the-effectiveness-of-fabric-masks-for-the-covid-19-pandemic-april-8-2020
https://www.nap.edu/read/25776/chapter/1#6
https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article
https://academic.oup.com/annweh/article/54/7/789/202744
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6599448/
https://www.acpjournals.org/doi/10.7326/M20-1342
https://link.springer.com/article/10.1007/s00392-020-01704-y
https://clinmedjournals.org/articles/jide/journal-of-infectious-diseases-and-epidemiology-jide-6-130.php?jid=jide
https://www.sciencedirect.com/science/article/abs/pii/S1130147308702355
TL/DR: Millions of dollars trying to find a single beneficial reason to use masks. All papers show the opposite.
For later