Everyman on cycling trip with odour, glimmering (10)
I believe the answer is:
iridescent
'glimmering' is the definition.
'everyman on cycling trip with odour' is the wordplay.
'everyman on cycling trip' becomes 'I ride' (where 'Everyman' is the setter of the crossword).
'with' means one lot of letters go next to another.
'odour' becomes 'scent' (scent is a kind of odour).
'iride'+'scent'='IRIDESCENT'
(Other definitions for iridescent that I've seen before include "shot" , "Glittering with changing colours" , "flashing colours" , "Eye-catching" , "shimmering with colour" .)