how do I get l4d2 stuff

I recenty bought both gmod and left 4 dead 2, and I am wondering how I can get things from l4d2 into gmod.

Also on a side note, is there any danger (viruses, trojans, etc) in downloading addons from the gmod site?

You cannot get things from Left 4 Dead or L4D2 without porting it.

Go download the pack from gmod.org

If you’re smart (which you seem to be), the most you could get into is a Lua virus (which doesn’t ever do anything besides annoy you in GMod).

They’re easy to get rid of too