It smells delicious.

它闻起来真香。

《柯林斯英汉双解大词典》

It smells yummy.

闻着好香。

《柯林斯英汉双解大词典》

It smells so delicious.

它闻起来很香。

youdao

You can bend over and look at your reflection, or you can jump in thrash around, see it what it feels like, what it smells like.

VOA: standard.2010.06.19

Avoid the temptation to say, "Well, poop smells bad because it's so stinky."

避免这样回答，嗯，大便闻起来不好,因为它很臭“

耶鲁公开课 - 心理学导论课程节选

And his fragrance smells really good. It makes you smell like money and success

他的香水闻起来真不错。它让你散发着金钱和成功的气息。

喜欢的设计师 - SpeakingMax英语口语达人

It smells a little like a sweet kerosene, which isn't as unpleasant as it sounds.

WSJ: Midsummer Night's Tipple: Gew��rztraminer to Riesling

It's cleaner now, but Shanghai looks the same, it sounds the same, and it smells the same.

CNN: The Ghosts of Shanghai

It smells like mice, mold, and something else, too, something very old as though time itself had an odor.

NEWYORKER: See the Other Side