Everyone on earth who know Donald Trump knows he's a liar. Trump lies more than even the most prolific pathological and compulsive liars. Anyone who would deny that should be tossed into a chipper shredder.
Why would Trump lie about having COVID-19? Trump would lie about having COVID-19 because he's a liar and lying is what he does. Trump lies for a reason. If Trump is lying about COVID-19 he has a good reason. That reason would be his fear of another ass kicking by Joe Biden in the next debate. The next ass kicking Uncle Joe had for traitorous Trump would have been the hardest ass kicking of Trump's life and not only because the deabte rules would be more strictly enforced but because Biden had Trump's number.Uncle Joe made Trump his bitch in the first debate and would have spanked him like the bratty child he is in the next debate.
UPDATE! As I was writing this, a news flash can over the TV saying Trump is now in Walter Read Hospital so he probably really has COVID-19 and it may be very serious. KARMA!
Pence will probably be president soon. If Pence croaks, say hello to President Pelosi.