Board Thread:Theories and Speculation/@comment-36512555-20200202084241/@comment-32685487-20200213192802

It doesn't show you him stopping it, it skips over it in the manga and anime but Zetsu comments that he did so, for example the flames in the woods are still burning but the flames on Sasuke are not.

https://automanga.com/uploads/manga/naruto/chapters/390/09.jpg

Shippuden 137 at 15:26

Itachi can extinguish the flames so according to your logic Itachi has Blaze Release.