Limiting mutual (tracer) diffusivities of aromatic compounds in different polar solvents were measured by the Taylor dispersion method. The data of the nonassociated disc-like solutes in this work are shown to validate the recently established fractional molecular–hydrodynamic relation [Ind. Eng. Chem. Res. 2019, 58, 20423–20440]. A new model is proposed to account for the tracer diffusivities of the aromatic solutes capable of H-bonding in various polar organic solvents. The model contains two functions: one for the intrinsic nonassociated diffusivity behavior of each individual solute molecule and another for the effect due to its solute–solvent H-bonding on diffusivity. A general equation developed from this model is demonstrated to be capable of correlating and calculating a total of 358 diffusivity data of H-bonded aromatic solutes, which have been measured here and collected from the literature, in different organic solvents at various temperatures to a standard deviation of 3.25% only.