[scoutt]

I think you refer to this: https://www.facebook.com/WHO/posts/2953744821337548

Also: "Wear a mask if you are coughing or sneezing"

They don't say "NOT to wear masks", as you said earlier. These are 2 different messages.

[SuoDuanDao]

Various local administrations (at least here in Canada) did, justifying it by saying you'd be more likely to touch your face to adjust it. It was simply a misinformation campaign to avoid supply shortages but the resulting erosion of trust is hard to counteract.