Reef tank Smell

[MarkoD]

ok so my tank has been set up for over 2 months now.

I have a skimmer, refugium and i run carbon.

My tank is located in my basement in a large family room that has the stairs that come down.

The I cant smell anything in the room where the tank is, but as i go up the stairs i can smell a humid ocean smell (humidity rises i guess)

I assume its just the evaporation that gets caught up at the top of the stairs and smells. My tank evaporates about 2.5 gallons/day

is there anything i could do to avoid this?