Quote Originally Posted by Greyblades View Post
The air is 70% nitrogen. Its harmless.
Eh, no it isn't. The fact that air is a mixture of 20% oxygen with other gases that do not react nearly as readily as the oxygen is what makes the 70% nitrogen in it “harmless” (provided that you can breathe it out).

Either way in quantities contained in a lamp neither is very likely to have long lasting ill effects on you. The whole point: halogen lamps are every bit as safe as ordinary lamps.