We study dangerous pathogens in labs all the time. All it takes is a laboratory accident for it to escape containment.
“Two years before the novel coronavirus pandemic upended the world, U.S. Embassy officials visited a Chinese research facility in the city of Wuhan several times and sent two official warnings back to Washington about inadequate safety at the lab, which was conducting risky studies on coronaviruses from bats.”
https://www.washingtonpost.com/opinions/2020/04/14/state-dep...