A prospective trial, identifying smokers and non-smokers now, and following them in the future to see if they acquire COVID-19 and their outcomes would be the definitive way to attempt to establish causation. Galiatsatos explained that he and his colleagues in the School of Medicine and the School of Public Health at Johns Hopkins have been working on a massive systematic review of all the publications put out [on the subject] so far, and based on their analysis, he said, weve found that those who smoke are more likely to suffer more severe symptoms of COVID-19. The finding isnt surprising, he said, because its what weve known all along: People who smoke tend to have worse outcomes from infection. Jeffery Drope, the scientific vice president of economic and health policy research for the American Cancer Society (ACS), has arrived at the same conclusion

Influence of nicotine on cardiovascular and hormonal effects of cigarette smoking Clin Pharmacol Ther 1984 36 : 7481 Aronow WS, Dendinger J, Rokaw SN
48 dogs smoked 100 cigarettes a day to prove that smoking is harmless Inhumane animal experiments Tobacco, the raw material of cigarettes, is a plant native to South America, as early as in the primitive stage of human society there is the behavior of chewing tobacco, Indians are the earliest smokers
The former allows you to clearly identify the problem to be solved and the audience segments to be targeted, as well as the Value Proposition, while the latter gives you the opportunity to learn about the habits and needs of your potential customers
You need to speak to school leadership about what is going on in this class