Olive oil? Peanut oil? No and (mostly) no.
Compared to hydrogenated margarine that was pushed a couple of decades ago before we learned about trans-fats? Of course.
If you use it when cooking for guests, you should disclose that you're using it (especially for non-meat dishes) because it may add extra fat that they're not OK with or consider inappropriate for personal dietary consumption (they're vegetarian, don't eat beef products, whatever).
I have a friend for whom we can't use anything that has sunflower oil in it, which is _really hard to avoid_ in surprising ways (there are spice blends that I use which have a bit of sunflower oil in the mixes).