Menace from husband interrupting pleasant event (6)
I believe the answer is:
threat
'menace' is the definition.
(synonyms)
'husband interrupting pleasant event' is the wordplay.
'husband' becomes 'h' (abbreviation).
'interrupting' means one lot of letters goes inside another.
'pleasant event' becomes 'treat' (I can't justify this - if you can you should give a lot more credence to this answer).
'h' placed into 'treat' is 'THREAT'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for threat that I've seen before include "Intimidation or warning" , "The rat became a menace" , "Potential source of danger" , "Hatter (anag)" , "Risk" .)