I don't think there is a way to turn off the passenger fan. In my 2020 MX you can move the air vents so that they are mostly closed but there is still some air movement. The best solution that I've come up with is to split the temperature and allow the passenger to change it to whatever they like.
I tried with your proposal @RNHurt, but my wife is not satisfied. She does not like blowing at all. I am thinking of filling up of holes, but I am scared it will coused damamge.
I tried with your proposal @RNHurt, but my wife is not satisfied. She does not like blowing at all. I am thinking of filling up of holes, but I am scared it will coused damamge.