One of the most used effects today in Photoshop designs is the mythical 'smoke effect', with which we emulate what gives the effect its name. The typical way to do it is generating it by hand from a gradient and clouds, but with a brush things are made easier.
After the now mythical jump, there are a gazillion twenty-four thousand brushes ready for you to download and plug them into your Photoshop, which I have already done with some of the packs out there (not all of them, we slow down even though we have plenty of RAM).
Source | designm.ag
Thick Curly Smoke brushes (21 brushes)
High Res Smoke brushes (9 brushes)
Thin Smoke brushes (15 brushes)
Real Smoke brushes (108 brushes)
Smoke brush set (21 brushes)
High Res Smoke brushes (42 brushes)
Smoke Effect brushes (7 brushes)
Smoke brushes Set 1 (6 brushes)
Smoke brushes Set 2 (6 brushes)
Smoke brushes Set 3 (16 brushes)
Smoke brushes Volume 1 (12 brushes)
Smoke brushes Volume 2 (40 brushes)
Smoken brushes (25 brushes)
Smoke brushes (6 brushes)
Smoke brushes (6 brushes)
Smoke and Ink brushes (13 brushes)