the smell of Saturday morning: the carpet and the upholstered sofa in the sunlight together with the ozone given off by the tube television. Watch TV while the parents are still sleeping.
I always associate the smell with ALF

The smell of a window-screen on a rainy summer day.

#11 Especially when it's been hot all day.

Mimeograph ink smell on freshly made school room handouts

you know you're old when nostalgia memes happened when you had kids in school

the smell of gas when I was many, many years younger