Very simple breathing mask (Respirator) made of paper for mouth and nose. Seen in Austria, Vorarlberg, Dornbirn. This is to protect other people from infection by COVID-19 viruses in Austria (?)
<a href="//commons.wikimedia.org/wiki/User:Asurnipal" title="User:Asurnipal">Asurnipal</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>