An innocent bloke encounters problem after chemist opening (6)
I believe the answer is:
cherub
'an innocent' is the definition.
(I've seen this in another clue)
'bloke encounters problem after chemist opening' is the wordplay.
'bloke' becomes 'he' ('he' refers to a man).
'encounters' says to put letters next to each other.
'problem' becomes 'rub'.
'after' means one lot of letters go next to another.
'chemist opening' becomes 'c' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'he' put next to 'rub' is 'herub'.
'herub' after 'c' is 'CHERUB'.
Can you help me to learn more?
(Other definitions for cherub that I've seen before include "Angel portrayed as a winged child" , "Sweet little baby" , "A chubby infant with wings" , "Baby angel" , "Angelic child" .)