We had Omicron during the holiday season. No symptoms. Not detected with home test. Detected by PCR test.
We only tested because we were travelling, seeing a lot of people (a couple of un-vaxed) and some older folks and our grandbaby.
A week later, tested negative with a rapid (in order to have surgery).
I'm not a proponent of asymptomatic testing, unless you have been in situations of risk. It's pointless otherwise.