>>543914382
If you want to be particularly scummy then swap your smokes out for incendiary grenades on support.
The moment that you kill 1-2 people, throw the incendiary straight at them. The grenade will most likely lock them out of a respawn. It's the best thing you can do for enemy supports who spam the defib around corners and run straight out into open enemy fire. Better yet, they run straight into the incendiary, revive that guy on 50HP and now you've bagged two or three kills instead of zero.