Here are a few descriptions for a WordPress post_tag “異味” (Yìwèi – Off/Unusual Taste/Smell) in Traditional Chinese, ranging in style and focus:

**Option 1: Concise & Informative**

> 異味：探索各种不寻常的气味和味道，可能是食物腐败、化学物质或其他引起感官不悦的现象。
> (Yìwèi: Tànsuǒ gèzhǒng bù xúncháng de qìwèi hé wèidào, kěnéng shì shíwù fǔbài, huàxué wùzhí huò qítā yǐnqǐ gǎnjué bùyuè de xiàngxiàng.)
> Translated: Off/Unusual Taste/Smell: Explore various unusual smells and tastes, possibly due to food spoilage, chemicals, or other phenomena that cause sensory discomfort.

**Option 2: Focusing on Food & Usage**

> 異味：關於食品中各種不尋常氣味和味道的討論，例如食物變質、烹調不當或其他可能影響食物口感和安全性的問題。
> (Yìwèi: Guānyú shípǐn zhōng gèzhǒng bù xúncháng qìwèi hé wèidào de tǎolùn, lìrú shíwù biànzhì, pēngdiào bùdàng huò qítā kěnéng yǐngxiǎng shípǐn kǒugǎn hé ānquánxìng de wèntí.)
> Translated: Off/Unusual Taste/Smell: Discussions related to various unusual smells and tastes in food, such as food spoilage, improper cooking, or other issues that may affect food palatability and safety.

**Option 3: Broader Context & Potential Causes**

> 異味：涵盖各种不寻常的味道和气味，可能源于食物、环境、化学物质或其他因素。本主题涵盖了气味产生的科学、健康影响，以及如何识别和处理这些异味。
> (Yìwèi: Hángài gèzhǒng bù xúncháng de wèidao hé qìwèi, kěnéng yuányú shíwù, huánjìng, huàxué wùzhí huò qítā yīnsù. Běn zhǔtí hángài le qìwèi chǎnshēng de kēxué, jiànkāng yǐngxiǎng, yǐjí rúhé shǐbié hé chǔlǐ zhèxiē yìwèi.)
> Translated: Off/Unusual Taste/Smell: Encompassing various unusual tastes and smells, potentially originating from food, the environment, chemicals, or other factors. This topic covers the science behind odor generation, health impacts, and how to identify and handle these off tastes/smells.

**Option 4: Simple & Direct**

> 異味：指不尋常或令人不悅的味道和氣味。
> (Yìwèi: Zhǐ bù xúncháng huò lìng rén bùyuè de wèidao hé qìwèi.)
> Translated: Off/Unusual Taste/Smell: Refers to unusual or unpleasant tastes and smells.

**How to Choose:**

* Consider the overall tone of your blog and the type of content you post.
* If your blog is food-focused, Option 2 might be the best.
* If you cover scientific aspects, Option 3 could be useful.
* If you just need a brief description for categorization, Options 1 or 4 are sufficient.

Remember to choose the description that best clarifies the meaning of the tag for your audience and the content you produce. You could also customize any of these options to better fit your particular needs. Remember to add this description in the “Description” field of the tag in your WordPress backend. This field helps search engines understand your tags.