I tested only with frag and smoke grenade
If you tap A D and C keys - continuously
your camera will glitch inside your character, it will become normal again if you put throwing object away from your hands
https://www.youtube.com/watch?v=eylyaC7_Eqc&feature=youtu.be
https://www.youtube.com/watch?v=Lly4-HSBdQQ&feature=youtu.be