AiraBreeze water tank smell after sitting overnight?

It’s probably just the water sitting. Most of these coolers get a bit funky if you leave water in them, especially in warmer weather. I wouldn’t overthink it, but emptying it when you’re done isn’t a bad idea.

Pretty normal for these things. I usually just dump the tank if I’m not using it for a while.

Probably just the water sitting, happens with most evaporative coolers. I wouldn’t empty it every time unless you’re leaving it for days.

I’ve been thinking about getting one of these, so this is good to know. Does the smell come back after you run it for a bit or does it linger?

Never had that issue with mine, but I only use it in hotel rooms and dump the water before I check out anyway. Stagnant water is gonna smell eventually, that’s just how it works.

Honestly I just dump mine out if I know I’m done using it for the night. Takes two seconds and keeps it fresh in the morning 🤷‍♀️

Kevin C asked whether the smell comes back or lingers, and that's the part worth separating. A quick musty whiff that fades after a minute of running is just the standing water, but if it sticks around or gets stronger, that's usually water that's been sitting longer than overnight, and dumping and rinsing the tank is what clears it. EnderWizard, since dumping at night already fixed yours, I'd keep doing that rather than worry about it.