Heat you don't want to feel (5)
I believe the answer is:
anger
'heat' is the definition.
(I've seen this in another clue)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for anger that I've seen before include "Incense" , "Range (anag)" , "Irateness" , "Nettle" , "Wrath, fury" .)