never turn off your exhaust that's what
@hawkbo told me ! what you can do though is move the fan outside and have tubing on the inside, should get rid of most of the noise if it's possible for you. there are also ways you can "build a silencer" which is basically a wooden box with some foam on the inside and it goes over your fan and it should reduce some of the noise. see this for more : https://www.thcfarmer.com/threads/diy-sound-proof-box-to-silemnce-your-inline-fan.46564/ hope this helps growmie ! 🚀