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COVID-19 inflicted by the SARS-CoV-2 virus has created mayhem across the globe and has afflicted socio-economic, political and cultural aspects of every nook of the world. Notwithstanding, the ensuing COVID-19 waves are still approaching and squeezing the economies of developed and developing worlds. Nanobiotechnology-driven interventions in COVID-19 may facilitate nipping in the bud at an early stage, consequently managing the menace of the virus. Nanostructures, notably luminescent carbon/quantum dots (C/QD), are potential nanomedicines in the field of theranostics and pharmaceuticals. They have stood the test of time due to their ease of synthesis, minimal toxicity, significant biocompatibility, tunable fluorescence, surface tenability, excellent photochemical stability and good hydrophilicity. In this mini-review, we have considered the recent findings of C/QD as potential nano-theranostics against COVID-19. Furthermore, we have also discussed antiviral modes of different C/QD. This mini-review will provide brief oversight and offer a new strategy to develop C/QD-based antiviral agents for future-ready pandemics. [ABSTRACT FROM AUTHOR]