The Infected:The Smoker

[DeathStroke]

The Smoker is an ambush class that can strangle Survivors with its long tongue, similar to Half-Life's Barnacle. The help of another Survivor is required to escape from a Smoker's hold (though if quick enough it is possible, though difficult, to kill a Smoker who has already grabbed you, earning an achievement). As the name implies, Smokers emit smoke when killed to impair Survivors' vision. A Smoker also will frequently cough, letting the Survivors know when he is in the area. The Smoker can drag players that he has captured with his tongue towards himself, though he remains stationary and cannot move. The Smoker is also momentarily paralyzed for a few seconds after having his tongue removed from his captive by another Survivor. In Left 4 Dead 2, the Smoker has six tongues, but this has no effect on gameplay.


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[Pbgiannhs]

From all of them in left4dead , imo best infected monster is hunter by far.