I'm trying to figure out what does the おくび mean in the following sentence:

私の汚れたところを、おくびにも出さず、綺麗にしてくれる人

For context, a character is thanking another person for helping them out after
they've puked.

Jisho is telling me that おくび means belch or burp, but I'm still not too sure
how I can interpret this.
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2019-12-11T09:09:52.557
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2019-12-11T11:09:06.507
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words
What does おくびにも出さず in this sentence?
Here,
[おくびにも出さない](https://jisho.org/word/%E3%81%8A%E3%81%8F%E3%81%B3%E3%81%AB%E3%82%82%E5%87%BA%E3%81%95%E3%81%AA%E3%81%84)
is a common idiom that means "not to breathe a word" or "not to reveal one's
(negative) feeling at all".

The idiom is worth memorizing, but おくび ("burp") is a rare word, and it's
almost never used on its own at least in modern Japanese. I believe most
Japanese speakers do not even know what おくび means.
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2019-12-11T11:09:06.507
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2019-12-11T11:09:06.507
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answer