Well, so much for the "lab-leak theory":

Australian Virologist Was At The Wuhan Lab in November 2019

She was working at the Wuhan virology lab, socialized with all the other virologists. saw nobody sick, and later tested negative for exposure. She also said that if anybody had Covid-19, she would have caught it, because they all spent time together.

Laurie Garrett, author of The Coming Plague was on TWIV (YouTube) last week. She was right in the middle of the SARS1 outbreak in China, and has spent years researching and writing about emerging viruses. She said EVERY SINGLE ONE of these events has had some sort of conspiracy theory that "explained" it. Usually involving the CIA! Like all conspiracy theories, they involve Rube Goldberg extra mechanisms that make them highly unlikely from the get go. Like hundreds or thousands of people that would have to keep secrets, or certain government entities doing something for no reason at all.

Occam's Razor: The simplest explanation is where you should start investigating.