"Immunomodulators-Many agents under consideration": Most initial interest regards anti-IL6 agents, to interrupt hyperinflammatory responses that resemble cytokine release syndromes and cause lung injury. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540747/all/Coronavirus_COVID_19__SARS_CoV_2_ "Evaluation of Serum Cytokines Levels and the Role of Cannabidiol Treatment in Animal Model of Asthma": IL-6 levels are increased in sputum and systemic circulation in severe asthmatic patients, which can be responsible for the raise of C-reactive protein circulation in these patients. CBD is also able to decrease IL-6 levels in an animal model. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4458548/