Yes, per, https://ourworldindata.org/data-review-air-pollution-deaths
7 million die from air pollution every year.
It is also stated that the poor, low income countries are most affected.
But of the total 67 million deaths WW annually, cardiovascular disease and cancers kill 29 million each year.
https://ourworldindata.org/causes-of-death
So, air pollution accounts for about 1% of WW deaths, while the 2 leading causes are 43% of WW deaths.
I would like to see the data on air pollution death for the US.