Today’s odor comes from chestnut. I just bought a pack.
In autumn and winter, the taste of sugar-roasted chestnuts (糖炒栗子) is always mouth-watering. You’d better wait for the hot chestnuts just out of the wok. They exude a so sweet smell you cannot avoid.
The process of roasting is unique. It mixes chestnuts and sand.
But my drawing today is not ideal. 
It’s hard to draw a simple object.
That gif you included in this post is so sensorial! I can almost smell the roasted chestnuts.
I had no idea that roasting chestnuts used sand – so cool!