(Note: an update to the question removed the basis for the previous version of this answer. The current version notes that the question as posed is unanswerable.)
Strictly speaking, vowels are either speech sounds or letters representing them. It therefore doesn't make sense to talk about words that "have no vowels in their spelling" as a matter distinct from "words that sound as if they have no vowels".
So in words such as "bird", pronounced in a rhotic dialect, the written 'i' isn't pronounced and therefore doesn't count as a vowel. Conversely, in words such as "my", the 'y' is pronounced as a vowel and therefore does count as a vowel.
Other words, such as hmm and pfft/pfftt, have dictionary entries and contain no vowels in their spelling, but they also have no vowels in their pronunciation. Such words rely on 'sustained' consonants such as f, m and n.
I conclude that there aren't any words that contain no vowels in their spelling which don't also sound as if they have no vowels in their pronunciation.