Is it possible to have fog in your apartment overnight?

Interesting thought.
I haven’t, but if it’s just air and it’s not processed by AC and heat, sure you can have fog in the apartment. But fog is kind of like a rainbow. The closer you are to it the harder it is to see.

Sorry, what?
I mIst that.

Early morning mist in cottages that are near a lake show mist if the heat is off and its cold and the window or door is left open.

Happens all the time when people run the shower too long,, or vent the dryer into the house.

My middle child had breathing issues. Often I’d sit it the bathroom, run the shower on hot hot and steam the bathroom up to help her breathe.
Her 6 year old sister walked in once, saw the steam, paused in astonishment, then said, “May I come into your dream?”