During the first fistfight between Bane and Batman, midway through the fight Batman throws what look to be smoke pellets at Bane and whiffs completely on all of them:
1 minute and 30 seconds into this clip is a good reference.
What exactly was the point of that? I've seen stronger variations of smoke pellets used by Batman that are meant to literally blind the opponent and give you time to escape, but even from the camera work you can tell that Bane couldn't have lost vision from that and they were thrown so far off that he's have to be looking behind him to get anything from the effect.