Simons D, Shahab L, Brown J, et al. - In this review, researchers calculated the relationship of smoking status with rates of infection, hospitalization, disease severity, and mortality from SARS‐CoV‐2/COVID‐19 disease. Researchers included adults who had a SARS‐CoV‐2 test or a COVID‐19 diagnosis. In searches up to August 25, 2020. they enrolled 233 studies with 32 ‘good’ and ‘fair’ quality studies. Smoking prevalence among people with COVID‐19 was was generally reported to be lower than the national prevalence. The results exhibited that current smokers appear to be at reduced risk of SARS‐CoV‐2 infection in comparison with never smokers; former smokers seem to be at increased risk of hospitalization, increased disease severity, and mortality from COVID‐19. Nevertheless, it is uncertain if these relationships are causal.