Recent experiments have demonstrated that chemical kinetics can be enhanced or suppressed by coupling molecular vibrations to quantized radiation modes inside an optical microcavity. Note that in these experiments, there is no external influx of photons to the molecule-cavity hybrid system as the device is kept under a "dark" condition, and the change of the chemical rate constants is attributed to the formation of vibrational polaritons, quasiparticles of photon-vibrational excitation hybridization, as well as the vacuum field fluctuations. This phenomenon is referred to as the vibrational strong coupling (VSC) enabled change of reactivities. A central feature of all VSC experiments is that when the cavity frequency ω c is resonant to the bond vibration frequency ω 0 , i.e. when the following condition is satisfied