Is nigella oil (black cumin or black caraway) aromatic?
I bought a bottle some time ago and wanted to share my experience. The nigella oil has turned out to be one of my favorite oils. I don't have any other like it. 

It has a very strong aroma, more similar to fresh carrot than to black caraway seeds. It is slightly bitter, and also slightly hot. The hotness is weak when compared to most hot spices, but it is there. The bitterness is very pleasant. It doesn't have the fatty, clingy quality of flaxseed oil bitterness (and has no fish taste at all). All in all, it is a very green, fresh taste, more like a herb than like an oil. "Robust" style olive oils taste this way, but the nigella oil is much stronger. 

It is too strong for combinations, but it is easily made the main star of many dishes. Frying an omelette in it completely changes the taste, no need for other spices at all (it does get more bitter at low frying temperatures, but does not lose the strongest part of the flavor, just the overtones). It is also very good for dipping a rustic bread. It is also economical in the sense that a little bit of it goes a long way (using too much of it makes it really overwhelming). Conclusion: a great thing to have in the kitchen.