If I had to guess based on that sub-headline, I’d assume that this probably is about some disparity in air quality in areas predominantly populated by different groups of people, and using a headline like this as a sort of clickbait to get people who would see that and go “Oh, so they think air is racist now, how absurd” to share and look at it. In any case, if it is indeed pointing out some systemic disparity like that, then that isnt the same thing as saying that everyone on the more fortunate end is personally racist in their opinions, just that a difference in average life circumstances exists.