Just a random thought, but they might be worth keeping. You never know when you may actually need a "stinky" oil. It may be just the right thing when you are working on something specific.
For example, I bought this one really odd and rather rare oil that I'd never really heard anyone use before. This was purchased in a huge bulk order from an online oil supplier so I had no idea what I was really getting. Well, when I got it I was quite upset because it was VERY sour and tart and just downright stinky. I thought it was useless.
Months later I was working on a grapefruit accord and I wanted the grapefruit to be much tarter than grapefruit oil, which is actually fairly sweet. Lemon wasn't tart enough, and things like cedar leaf oil and such were too green (and sweet, in the case of cedar leaf). I was sniffing through a bunch of random oils searching for just the right thing when I came across the stinker and realized it just might work. Sure enough, at a ratio of about 10% this oil to 90% grapefruit, it worked beautifully and added just the tartness I was looking for. The accord was now more grapefruit peel than sweet grapefruit.
A number of perfumery's finest materials don't actually smell all that great on their own (ie civet, ambergris, many floral absolutes such as the lotuses, etc).
