breathing not working

[Monoxide]

I have a mac, and my breathing regulator isn't working. I cant find the place in my key binding menu to set a key for it. and yes, I have to latest patch. Is there some console command to do this for me? or is this a well known problem?

[Mac_Fodder]

What ever key you have bound to bring your gun up in to aim mode is the key for breathing. You just hold it down for about a second and the the bobbing slow down then stops.

It works fine on Macs, I havn't had any problem.