I tried to describe what snow smells like and came up with nothing useful. That’s not the same as saying I wouldn’t recognize the smell if I came across it.
Snow is wet and clean and sharply cold.
For me, the smell of snow is usually mingled with the smell of gasoline (of the school bus idling as we all tramp through the snow and up the three steps to our seats) or smoke (sitting in front of the wood stove after being outside in the snow for a few hours).
What does snow smell like to you?