Agreed. For misting to cause an RI would have to have put ambient humidity above optimal range for an extended period of time. Increasing humidity is what's usually called for in an RI to help keep mucous loose, and because RIs quite often occur due to too low of humidity.
That said, it would still take more than two weeks for an RI to do in an animal in even just sorta okay condition. I've had my skinny girl going on the antibiotic merry-go-round for almost three months now, and she was sold to me as a problem feeder snake that had been in someone else's sub optimal care for about 9 months before that, and they didn't even notice she had an RI. While I wouldn't call her thriving at the moment, she's certainly not at death's door yet either.