I had been looking for the same information after an unnerving encounter picking up propane at the local Ace Hardware. All I could find different from you was the following:
"If the new coronavirus has ever made you its host, you are almost certainly guilty of some silent spreading.
Scientists in China have shed new light on how readily the SARS-CoV-2 virus spreads unseen from person to person — a form of “cryptic” transmission that can transform a manageable outbreak into an out-of-control epidemic.
People infected with the new coronavirus are almost certainly emitting it for close to 2 ½ days before their first signs of illness appear, the scientists found. In fact, the contagion of an infected person reaches its peak roughly 18 hours before she feels the first blush of fever, notices the first twinge of body ache, or experiences her first bout of coughing.
In short, an infected person can walk around feeling fine for more than two full days while spewing virus into the air, depositing it onto door knobs and handrails, and sowing the seeds for future infections."
https://www.latimes.com/science/sto...XIHG5uOpoIGZDmESl_9nIOUc1Gkbww5zNlMfDKRlNMJ7w