When you reload as infernus, a bunch of "X" 's pop up on the screen and make it impossible to see. They begin to dissipate and then go away. They are red and orange and sort of a checkerboard print
Just wanted to bump this quick, happened to me as well. Restarting the game after fixed it but imo this is hotfix worthy, you don't know it's going to happen until you're already in a match and then you're stuck getting smoke grenaded every time you reload the entire match. Can't imagine this is limited to just a few people.
Will bump as well, just played a whole game as infernus, and it was rough not being able to see each time after reloading. Just verified and went to sandbox, and it's fixed here, so we'll see. Will update again if it's fixed in an actual game.