Are you in Washington state?
We have to deal with static electricity in Las Vegas. It come to the point that we can't use vacuum cleaner on carpet without getting thousands of electroshocks.
When I try to wash my hands, I get one spark touching the faucet and 2nd touching the water.
The critical humidity for those occurrences seem to be 25-30%. _(we are getting single digit in Vegas)
The 1 gallon humidifiers are useless for the house. I bought $600 central humidifier.
In camper I let the shower steam to go inside main room and that usually is sufficient.