THIS! One of these. Of course the TDs get them free!
RT @WHO: #WearAMask that fits well & covers the nose & mouth without gaps on the sides is recommended when:

✅ Indoor with poor/unknown ventilation
✅ Indoor or outdoor where physical distance of at least 1m is not possible

regardless of vaccination status or history of prior infection.

🐦🔗: https://nitter.eu/NChildersMEP/status/1526453220083630080