I think the article linked the wrong article? Because the article describes the linked study as "researchers grew human lung cells in a lab and exposed them to

I think the article linked the wrong article? Because the article describes the linked study as "researchers grew human lung cells in a lab and exposed them to dust from car brakes and from diesel tailpipes", but the linked study is a cohort study of correlation, that doesn't involve any experimental manipulation and is nothing like that description (at least as presented in the abstract I have access to.)