obnoxious和unpleasant的区别？

obnoxious，有令人作呕之感，反感之极，unpleasant则是令其感到不愉快，不一定达到反胃、呕吐。

如果不是描述气味，unpleasant较为平和，obnoxious带有讥讽之意。

obnoxious:
1. 令人非常不快的,讨厌的,可憎的
an obnoxious smell
一种难闻的气味
2. 【古】易受损害的[(+to)]
3. 【古】应受惩罚(或谴责)的

unpleasant:
1. 使人不愉快的;不中意的;讨厌的
The smell was unpleasant.
这味道很难闻。
2. 不客气的
She was rather unpleasant with me.
她对我相当不客气。

no difference except obnoxious is stronger in meaning than unpleasant