Take a look at our paper demonstrating how Covid19 severity is partially dependent on the first wave of innate immunity in your lung itself, which can be impaired by smoking pubmed.ncbi.nlm.nih.gov/32766588/
pubmed.ncbi.nlm.nih.gov Direct exposure to SARS-CoV-2 and cigarette smoke increases infection severity and alters the stem... Most demographic studies are now associating current smoking status with increased risk of severe COVID-19 and mortality from the disease but there remain many questions about how direct cigarette... 