Short commentary proposing that integrating olfactory training (including essential oils) with visual rehabilitation could exploit olfactory–visual neuroplasticity to improve sensory function after COVID-19 and in conditions mentioned such as Parkinson's.

Low direct Parkinson's therapeutic discovery value because it lacks mechanistic, biomarker, or intervention detail, but it flags a non-pharmacological neurorehabilitation concept that could inform quality-of-life and symptomatic care studies.

Post-COVID-19, olfactory and visual training have demonstrated health benefits, particularly for individuals with visual impairments and neurodegenerative conditions such as Parkinson’s and glaucoma. Integrating olfactory training with essential oils and developing multisensory technologies could improve the quality of life for those with sensory deficits, underscoring the brain’s adaptability and the therapeutic potential of herbal ingredients. This short review commentary proposes that the neuroplastic interplay between the olfactory and visual pathways, including their demonstrated anatomical and functional convergence, may provide a conceptual foundation for integrating olfactory stimulation into future visual rehabilitation strategies.