STEP !:
Open Photoshop and create a new document. I used 1920x1200 pixels. Then apply a gradient. I applied a Layer Style, Gradient Overlay instead of a gradient fill. Use Radial for the Style and #07090a and #202b35 for the colors.
STEP 2:
Add some Text in white, I used Nanum Brush Script Regular, and set it at 384 pt with the Horizontal Scale at 111%. I also used the word "SMOKE".
STEP 3:
Go to Filter>Blur>Motion Blur. Use 90º for the Angle, and 25 pixels for the Distance.