Traditionally, I analyze the next stream of Anchi Baranova, because in addition to reliable information she has a lot of gag that can be harmful to people's health.
On this occasion, we can discuss the facts with you in the comments, but I will block any transition to personalities with a ban. Without warning.
About ventilation
Ancha says it's bad when the air conditioner works in a bus or a small room with the windows closed.
Here I completely agree with the author. If the air conditioner operates in recirculation mode, then this is bad. And it works in this way in order to increase the efficiency of cooling and does not pull contaminated air outside.
Then the author says that it would be especially bad to be in a closed room not with air conditioning, but with a fan, which can send something inside from the next corner of the room.
And here I no longer agree. No need to demonize fans. More than a year ago, the US Centers for Disease Control proposed not only opening windows in rooms, but also using fans to drive air.
The fact is that infection requires the so-called infectious dose of the virus. That is, you need to go into a cloud of viral aerosol and breathe there. Viruses are already flying around. If one or two get in your nose, you won't get sick. Infection requires an infectious dose.
So, if a dense cloud of viral aerosol dissipates, then you will not receive an infectious dose and will not get sick. Fans allow you to disperse a cloud of viruses before you hit it.
There Ancha also says that a fan can catch a virus on you from another corner of the room.
Here I also disagree. Because viruses are not a flock of sheep to catch up. They will not fly in a dense group, but will scatter in the air in the same way.
Minefield
Let me offer you a minefield to illustrate this idea.
If you step on an antipersonnel mine, it will gasp and beat you. It's like a concentrated cloud of viral aerosol that you run into in an enclosed space.
And on the other hand, if a fan is running in the room, it will be difficult to get infected. Well, roughly as if you conditionally stepped on an anti-tank mine. It won't work on you because it needs a tank. That is, if you try very hard, dig up this mine and hammer on it with something, then maybe it will gasp. But to do this, you need to behave in the wrong way.
And now imagine that you are offered to walk through a minefield in which one anti-personnel mine is buried. This is a concentrated cloud of viruses. Such a crowd is coming for you, and if someone runs into a mine, then it is guaranteed to beat him down.
Or another story. You are being driven into a minefield with anti-tank mines. There are many of them, but they do not work on the peacefully wandering civilians. It is like a cloud of viral aerosol scattered over a large area. Which would you choose?
Well, I analyzed 14 minutes of stream from 2 hours 12 minutes. What was there next?