What is Cloth facemask?
{{for|the mask that keeps [[bacteria]] and [[virus]]es out|N95|FFP rules}} [[File:Denim facemask from Clovis, California (transparent version).png|thumb|A simple cloth face covering made from denim]] [[File:Tram operator refuses man without mask detail, from- 165-WW-269B-11-trolley-l (cropped).jpg|thumb|During the [[Influenza pandemic of 1918|Spanish flu pandemic]] of 1919, a man is not allowed on a [[tram]] because he does not wear a mask. ]] A '''cloth facemask''' covers the [[mouth]] and [[nose]]. These masks are made of [[Textile|textiles]]. [[Cotton]] is used often. It can be used to protect against [[air pollution]], but they do not work well.<ref>{{Cite web|date=2020-04-04|title=Use Cloth Face Coverings to Help Slow Spread {{!}} CDC|url=https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.html|access-date=2020-10-29|archive-url=https://web.archive.org/web/20200404022142/https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.html|archive-date=2020-04-04}}</ref><ref>{{Cite book|url=http://archive.org/details/3edintroductiont00garruoft|title=An introduction to the history of medicine, with medical chronology, suggestions for study and bibliographic data|last=Garrison|first=Fielding Hudson|date=1921|publisher=Philadelphia W.B. Saunders|others=Gerstein - University of Toronto}}</ref><ref>{{Cite web|last=Peltier|first=Richard E.|title=Millions rely on cheap cloth masks that may provide little protection against deadly air pollution|url=http://theconversation.com/millions-rely-on-cheap-cloth-masks-that-may-provide-little-protection-against-deadly-air-pollution-64791|access-date=2020-10-29|website=The Conversation|language=en}}</ref> Cloth facemasks may stop some [[Respiratory droplet|droplets of liquid]]. Today, [[medical doctor|medical doctors]] use [[respirator|respirators]], which work well. A [[Scientific method|scientific]] paper done in 2010 said 40 to 90 [[percent]] of dust goes by a cloth facemask.<ref>{{Cite journal|last1=Rengasamy|fir