There are various synonyms available for the word "normal favorable dust," which can be used alternatively to convey a similar meaning. The term "normal" can be replaced with words like "typical," "regular," or "usual." Similarly, "favorable" can be substituted with synonyms like "beneficial," "advantageous," or "positive." Lastly, the word "dust" can be substituted with alternatives like "fine particles," "powder," or "debris." These synonyms help to convey a similar meaning with different shades of meaning and depth, and they provide more variety in language usage. Using synonyms also helps to avoid repetitive language, which makes the text more engaging and interesting to readers.