Circulating air is what got 20 or so people infected with covid because someone decided to sit in front of a ventilator at a cafe South Korea. The staff, all of whom wore masks didn't get infected.
Your link is the medias factoid about mask wearing. And this is the problem, no one is explaining first principals to you.
You are probably thinking of this factoid in China about air conditioners and this diagram, which is not what we are talking about at all. (The evidence is downward air is what you want)
Although that is kinda close, I'd stop concentrating on the oga booga marketing you've picked up, like things sticking, and try and learn the science. Plenty of YouTube videos and HN articles have discussed it.
