Use fan wrongly and it becomes dangerous (6)
I believe the answer is:
unsafe
'dangerous' is the definition.
(I know that dangerous can be written as unsafe)
'use fan wrongly' is the wordplay.
'wrongly' indicates an anagram.
'use'+'fan'='usefan'
'usefan' with letters rearranged gives 'UNSAFE'.
'and it becomes' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for unsafe that I've seen before include "Risky - inadequately evidenced" , "Perilous" , "Unreliable" , "Hazardous" , "Dangerous, insecure" .)