Cold cure? (6)

I believe the answer is:

heater

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'cold cure?' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

This is all the clue.

Can you help me to learn more?

(Other definitions for heater that I've seen before include "Source of warmth; gun" , "Warming device" , "Room warmer" , "Radiator" , "fire" .)

I've seen this clue in The Irish News.

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