They're referring to the sounds puh and buh, and how that can spread things futher. Not sure how to explain it in English, but if you do it yourself, your breath is more spread?
I haven't because the news stresses me out. I want to hear about things that actually impact my life. What's going on enviromentally in my country, how are exports and imports, what policies and political tactics are happening that are being hidden. You know, impractical things that only the frivolous should concern themselves with.
whats sad is that this is literally true. b and p sounds put more possibly virus carrying saliva into the air. however, they're talking about it like it's the only/most important thing that is spreading the virus, which isn't really useful.
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