While doing a small interstate campaign tour on Wednesday, the 77-year-old politician was filmed frequently coughing to the point of sometimes having to clear his throat before continuing speaking.

Biden appeared to have put some Americans on the alert, as both his supporters and Donald Trump’s began obsessing over the footage and speculating on the candidate’s health.

Some immediately went with the worst-case scenario, calling Biden “Covid Joe.” Others chastised the presidential hopeful for coughing into his hand and not his elbow – supposedly the safe way, according to Biden himself.

Others went with more far-reaching theories, saying that the septuagenarian was coughing to gain “sympathy points” with voters, or even saying it is due to his alleged use of “cognitive enhancement pharmaceuticals.”