//The Cuddle One:
This entity does not follow parent angle changes(wanted to make a rotating turret...). Hammer Editor lost its all beauty and power and just not fully implemented entities left... Please Valve, start making all entities fully working!
I could not get this to work unless parented to a prop_dynamic. Anyone else can confirm? EDIT: it does work without parenting. However when using please make sure it can 'see' the infected, ie if stuck too deep inside a prop it will not fire.