It's a sickness you get from fish, miss (10)
I believe the answer is:
salmonella
'it's a sickness you get' is the definition.
I can't tell whether this definition defines the answer.
'fish miss' is the wordplay.
'fish' becomes 'salmon' (salmon is a kind of fish).
'miss' becomes 'ella' (I've seen this before).
'salmon'+'ella'='SALMONELLA'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for salmonella that I've seen before include "stomach trouble" , "ill-feeling" , "Source of complaint" , "Bacteria causing food poisoning" , "Nasty bug" .)
