There is a substantial difference between the 2 and we apparently do not like white pepper
Furthermore, white pepper is produced by ripen pepper while black pepper is not produced from ripen pepper. White pepper has more spicy taste and it might have an odor because it's not well dried because when producing white pepper, they are kept in water for many days to ease remove the outer layer. So, if it's not well dried after keeping in the water, it might get an odor ..