This is a lovely piece Stephen. I enjoyed it.
Just for discussion.................
The correct use of the word 'myriad' seems to be one of those subjects with no decisive conclusion. (A bit like how many syllables are in the word 'fire.'

) Personally I think that when it used as a noun it should be followed by 'of.' However, I dislike it being used as a noun. I much prefer its use to be an adjective. eg. 'myriad aromas.' As it means 'a great many of' (10000 in the original Greek) the adjective sits better grammatically IMO. I suggest that you could adapt your line...
There’s a myriad aromas, each one clear as any bell........to......
There are myriad aromas, each one clear as any bell......because, as it is, it seems to require the 'of' after 'myriad', and that would upend your great meter.
Any thoughts on this?
A beautiful poem nonetheless.....
Cheeers
Glenny