Hi, I'm new here, name's Ryan. I've done a very small amount of fly tying in the past. I recently decided to try my hand at tying and opened up a box of some old tying materials to find they all smell of head cement which was also in the box. I know most fish are picky about smell, and was wondering if this would have an effect on using the materials to tie flies. Should I ditch this stuff and start over or is it ok to use?