How do you block sound?

[Mackiiboy]

Hiho all nice developers!
I'm just wondering if there's any smart way to block sound.

When I'm entering the highest floor on my map, it sounds like the whole house is on fire. I have three rooms with stoves + campfires, and when you're walking near the walls outside the rooms, you hear the sound.

My first thought was to make some kind of invisible entity and make it block sounds. Then it would be easy to just place them inside the walls. I have no idea if it's possible to do this, that's why I'm asking you.
Maybe it already exist better methods to block sounds.