In addition to impairing the immune and vascular systems and triggering cerebrovascular and neurological dysfunction, smoking and vaping often worsen the outcomes for patients who contract influenza or other respiratory or pulmonary diseases.
More information is needed after a French study suggested nicotine might play a role in preventing some illness from the coronavirus. Nicotine is not thought to attack sars-cov-2 directly. It may, however,
play an indirect role that involves a cell-membrane protein called ace2,
to which the virus attaches itself in order to gain access to a cell.
Some researchers suspect that nicotine binds to ace2 as well, and that
this makes it harder for the virus to do so alongside it.