I have both the NyoGel 760G and NyoGel 779ZC that I bought from Lighthound and they work very well and they do not have any smell whatsoever. Here's a thread that you might want to check out.
Looks like some interesting information there thanks.
Hopefully that thread doesn't end in an argument that budget lubricant is a false economy and although all of them do a reasonably similar job only the top of the range most expensive lubricant can be trusted in a flashlight that you rely on to protect your life and that of your loved ones......or to look in the garden shed.
I use Superlube from Ace Hardware on o-rings. It has PTFE but goes on like vaseline from a tube. Easy to get and not very expensive. I wouldn't have any problem using it on anodized threads, but it might not conduct electricity, so I don't know if it would be good for bare threads. It seems like for threads you want something really thick and that anything soft like vaseline would just attract dirt.
A small tube of silicone grease does'nt cost that much.....if you live in the states let me know, because the next time i go to DebbiesRCWorld i'll pick up a couple of tubes since i need one anyway.