It essentially makes it more resistant to water damage and mold growth. Mold can still grow on it,

You should use a NADCA certified duct cleaner that cleans under negative pressure so they don’t do damage

Fun fact: mildew is just a type of mold, so they’re actually the exact same thing. So, when

Yes! Mold colonies often create an earthy, damp, musty, stale odor that takes over the indoor space. Why Does