macbook pro rMBP early 2015 burning plastic smell

rMBP 13 early 2015 i5 2.9 gHz

When I run games in either os X or bootcamp (Windows 8.1) my temperature monitoring programs tell me I'm up in the 100 Celcius range. I've decided to stop worrying about it and just continue to use my macbook as I wished.

While gaming in windows 8.1 (Fallout 3), I noticed a burning plastic smell coming from the keyboard. This usually doesn't happen when I'm gaming in OS X. I wonder if the bootcamp drivers are inefficient and have allowed some component to overheat and burn up. Anybody else have this happen to them? Computer still seems to operate fine. I can't imagine what would have burned, maybe some solder, or the keys themselves? Do me a favor and smell your macbook pro, smell like burning plastic?

Thanks.