How To Use Fog up In A Sentence

Fog upset the train timetable.
I knew he didn't mind, this way him and Porsha would be able to fog up the windows without having to worry about me being there.
It invariably takes me by surprise when I enter a steamy greenhouse in winter and my glasses fog up. Times, Sunday Times
The steam from the hot drink started to fog up his glasses.
Fog upset the train timetable.

Sitting in his car, Ross Granger sips his coffee, watching the steam fog up the window in front of him.
Marcy's horn-rimmed glasses began to fog up from her breath.
The change was almost phantasmagorial, as if the sun had burst through the fog upon that face: it became clear, bright, almost radiant. The Romantic Adventures of a Milkmaid
The polysulfide degrades, cracks and causes the window to fail and ‘fog up’.
It invariably takes me by surprise when I enter a steamy greenhouse in winter and my glasses fog up. Times, Sunday Times
The polysulfide degrades, cracks and causes the window to fail and ‘fog up’.
We see the camera lens fog up whenever Micha lays eyes on his crush, the ridiculously foxy Miriam.
But then things begin to fog up in an orgy of fills, effects, and scratching before a drum machine boots the song into a new direction: chugging rock punctuated with sundry bits of feedback and squall.
The windscreen started to fog up.
If you look closely, and try not to fog up the mirror with your feverish breath, you can see a number of tiny fluid-filled blisters.