#masks4all was a popular hashtag movement encouraging universal masking using home made masks (or better) during the COVID-19 pandemic.

According to the official masks4all website, the masks4all project was founded by Vojtech Petracek, Vladimir Zdimal, Emil Pavlik, Leos Navratil, Martin Hausenblass, Petr Ludwig, Jeremy Howard and Josef Prusa.

The hashtag stopped being widely used once universal masking policies were widely implemented in mid-to-late 2020.

In the news

  • #COVIDisAirborne - hashtag created to raise awareness that aerosols are the predominant mode of transmission of COVID-19.