What might contain arrangement of unopened flowers possessing strong smell? (8)

'what might contain arrangement' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'of unopened flowers possessing strong smell?' is the wordplay.
'of' is an anagram indicator (the answer comes from or 'of' the letters).
'unopened' means to remove the first letter (without opening letter).
'possessing' means one lot of letters goes inside another.
'strong smell?' becomes 'bo' (abbreviation for Body Odour. I am not sure about the 'strong' bit.).
'flowers' with its initial letter taken off is 'lowers'.
'lowers' with letters rearranged gives 'rosewl'.
'rosewl' going around 'bo' is 'ROSEBOWL'.

Can you help me to learn more?