Can I use bed sheets to make face masks?

A study investigating the use of household materials to make face masks found that cotton material and pillowcases are some of the best choices, coming in at 50-60% effectiveness. This is because they’re breathable and even more importantly, they can trap small virus particles (which are a similar size to the coronavirus). The results also leaned favorably toward antimicrobial materials which kill 99.9% of microorganisms.