I don’t know if this is true, but I’ve seen posted that these videos are frauds and come from some cheap SciFi movie....
Someone had posted a video from the movie Contagion. Which incidentally is on tv this week!
Go to amazon looking for N95 rated masks, there’s definitely a run on them.
Some are, and some are not.
If they look like they are suffering from severe radiation poisoning, it’s definitely from a movie. Same with multiple gunshot wounds and severed heads.
And if they are being eaten by zombies, you can ignore those too.