<p>Essential oils rich in limonene are widely used in various citrus-flavored products due to their distinctive aroma. However, achieving a specific citrus-like scent often requires a blend of essential oils from the Citrus genus. This study explored the impact of cold plasma treatment on limonene-rich essential oil, with a focus on the chemical reactions triggered by this process and the subsequent changes in aroma. The research involved treating a limonene-rich essential oil with dielectric barrier discharge (DBD) and glow discharge (GD) plasma processing. Different excitation frequencies were used for DBD, while varying air flow rates were applied for GD. The application of cold plasma technology was found to reduce the citrus notes of the oil while enhancing its secondary characteristics. The specific plasma system and operating conditions played a crucial role in determining the selectivity of the chemical and aroma modifications. This study demonstrated that cold plasma treatment could effectively alter the secondary notes of limonene-rich essential oil, resulting in the development of new oils with enhanced floral, woody, herbal, minty, and aldehydic notes. These findings suggest that cold plasma technology offers a promising method for modifying the aroma profile of essential oils, potentially leading to innovative applications in the flavor and fragrance industries. The ability to fine-tune the scent of essential oils through controlled plasma treatment could pave the way for the creation of customized aromatic products, meeting specific consumer preferences and expanding the versatility of essential oils in various commercial applications.</p>