Recently, differential expression of miR‐2137 was observed in bone marrow‐derived macrophages after infection with Porphyromonas gingivalis bacteria (Huck et al., 2017), and inhibiting miR‐2137 increased expression of the anti‐inflammatory cytokine IL‐10, suggesting that miR‐2137 may be pro‐inflammatory following O3 exposure. Here, IL10 is linked to infection.