I generally use stock images to create artwork, going through unsplash.com I saw a few images of smoke and I downloaded a few of them. Days went by but I didn't created anything out of them but one day I saw some geometric shapes blended in images and it got me to the idea of mixing smoke and creating patterns and connecting geometrical shapes to it. It took me another 7 days to create final images.
More info: behance.net
Lamp.
Roll.
Crossroad.
Loop.
Boombox.
Blush.
Bulb.
Butterfly.
Clitoris.
