How to remove the "new carpet smell" (VOCs) from new carpet?
I don't know how true it is but I've heard a few times that certain plants do a good job of removing VOCs from household air. You could try investigating this claim. Here's one page that mentions it.

http://www.thedailygreen.com/going-green/tips/best-plants-for-indoor-air-quality

My wife has trouble with a variety of VOCs. It might not be an option for you to store the carpet partially outstretched in your garage until most of the odour departs.