He's not in any way medically or chemically trained either, and has a well established history of sometimes saying things that are not factually correct during briefings. Why would you rely on that as a source?

According to Trump's own words on the coronavirus, you can call it "a flu". During one of his daily press briefings, he listed off things you can call it, and that was on the list.

Influenza and coronaviruses are both categories of virus, but they are very different categories. They are not only not the same family, they are also not the same order, class, or phylum.

That's like if we were being attacked by horses, and Trump said, "You can call these horses many names... including octopus."