Problem getting worse

I have done everything I've been told so far. Nothing has worked. My car is now idling at 2200. I've adjusted the throttle screw. I've cleaned the IACV. I've replaced the FITV. And I've checked hoses. Nothing is working. Even worse, now my car reeks of antifreeze. I first noticed it when I would turn the heat on. But now it smells even with the heat off. People say it could be my heater core, but they said a film glazes over the inside windshield. I have no glaze on the inside, but it is on the outside. All winter my car has been idling high, so what I do to prevent wasting fuel is, whenever I'm stopped, I put it in first, hold down the brake, then lift off on the clutch so my idle drops. It goes to about 1100rpm. I let off just enough so that the car doen't die. I recently was caught by a train, so I did the usual routine while I was waiting. Then it smelled so bad of antifreeze. And I then noticed smoke coming from under my hood. So I turned the car off and waited for the train to finish. After it was gone I started back up and drove the remaining 3 blocks home. It didn't smoke anymore but it still smelled bad. I popped the hood and it smelled but no smoke I could see. Please, does anyone know what could be wrong? Thank you.

Thats not anitfreeze dude, your toasting the hell out of your clutch!

Is that what that awful smell is? My friend said it smelled like antifreeze. That doesn't explain my idle though.

yea ur slipping ur clutch which is burning it out, which isnt any good
as for the idle, get a new throttle body, your not supposed 2 fuck with the idle screw, if the idles fucked, its either a vaccum leak, or a messed sensor or something

yeah clutch smells horrible...you probably decreased the life of it substantially. I can smell it if I rev high when I reverse, but that's about it.