Some have VERY strong opinions on this and I don't mean to take this thread in a different direction but you might be surprised to hear that WD-40 is actually preferred by some as a fish attractant or masking agent over many other products including smelly jelly. I have actually seen it sprayed on bait like herring, of all things, for king salmon and springers. Although I don't use it myself and do not condone the practice, I was amazed that it did not seem to adversely affect catch rates. So, I doubt it would be a real problem on your guides either. I'd think smelly jelly would get pretty gummy though. My sticks are grimy enough as it is and all I do is dip them in the water from time to time. 'Course you could always blow on or suck on your guides. (Don't go there M.) But whatever you do and no matter what your "buddy" tells you, never put your tongue on them.