[MrEdd]

And the air in a large part of China is like the air in Los Angeles during the seventies.

[RummyChick]

The air in this part of China probably makes a difference

https://nypost.com/2017/07/03/the-secret-to-living-past-100-can-be-found-in-this-remote-chinese-village/

[Bon mots]

And the air in a large part of China is like the air in Los Angeles during the seventies.

Also true. I got the flu in Beijing some years ago and it was awful. The air was full of dust and pollution - storms from the Gobi Desert were adding to the dust.

If you drove your car from the car wash to a parking lot, it would be covered in dust in short order. The air smelled like sulfur and after a while you understood why so many Chinese spit.

After breathing the air in Beijing for a while, I felt like I had to spit and I never do that!