bathroom humidity sensor?

Hi!
Is there anyone that has done a script for rapid humidity rise that triggers a fan? (so you don?t have to change the humidity for different seasons). Thanks /Andreas

Did you ever get an offline response? I’m looking for the same thing now. Automatically turn on my shower exhaust fan if the shower is on and someone forgot to turn the fan on before they got in.

EDIT: I found what I was looking for.
https://www.livehouseautomation.com.au/blogs/news/bathroom-fan-control-detecting-humidity-spikes-using-pleg