I can't link the l'Aigle retexture, because it was given to me privately. But the smoke mod is this one:
https://www.fsegames.eu/forum/index.php?topic=15235.0If you want only the smoke mod, because there is more inside, just use the files with scripts.txt and particles in it.
There is also a Lite version within the download if you want to save some FPS.
.brf files go into the resource folder.
.dds files go in the texture folder.
.txt files go in the main directory of NW.