Marvellous creative commons poster available in English and French on best practices to #StopTheSpread of #COVID19, visualizing how #CovidIsAirborne and why it is so important both to #MaskUp and #CleanTheAir. Credits to I. Bauthian and R. Morse. https://cdn.masto.host/urbanistssocial/media_attachments/files/110/997/145/658/367/647/original/9f2aea00da95575a.jpg https://cdn.masto.host/urbanistssocial/media_attachments/files/110/997/145/664/960/907/original/b9f79398e5f24ddb.jpeg