Left: IR8 = /L₈ ratio as a function of L₈ for X-ray/optical AGN excluding power-law AGN. Upper panel: as-measured IR8 ratios of the X-ray/optical AGN. They fall on the same sequence as star-forming galaxies. Bottom panel: the same galaxies after de-boosting their IR8 ratios for starburstiness. The galaxies present a slightly different configuration, but basically remain centered on the trend of star-forming galaxies, suggesting that in these AGN the IR emission is dominated by star formation. Right: IR8 ratio as a function of L₈ for power-law AGN. Upper panel: as-measured IR8 ratios of the power-law AGN. They fall on the same sequence as star-forming galaxies, like the X-ray/optical AGN at left. Bottom panel: the same galaxies after de-boosting their IR8 ratios for starburstiness. A significant fraction of the galaxies now fall systematically below the main sequence IR8 ratio, showing that their 8 μm emission is boosted by the hot dust heated by the AGN.