EditordAlthough there is extensive discussion of COVID anaesthesia management and infection control in the operating theatre, there are few articles examining whether perioperative anaesthesia-related drugs could affect COVID-19. Here, we discuss this possibility.SARS-CoV-2 binding sites (Fig. 1) Angiotensin converting enzyme 2 Angiotensin converting enzyme 2 (ACE2) is the best-known target cell receptor for SARS-CoV-2 internalisation. It is widely distributed in human cells and tissues and highly expressed in the small intestine, testes, kidneys, heart, thyroid, lungs, salivary glands, and adipose tissues, but not in the vocal folds, epiglottis, and trachea. 1 Sigma-1 receptor SARS-CoV-2 interacts with sigma receptors via non-structural protein 6 and coronavirus open reading frame (Orf) 9c proteins to infect cells. 2 Knockout and knockdown of sigma-1 receptor (Sig-1R), but not of Sig-2R, decreased SARS-CoV-2 replication. Modulation of Sig-1R may thus affect the early steps of viral endocytosis to change SARS-CoV-2 infection for immunologic enhancement. 3