Cold with developing catarrh’s very disturbing thing to watch (3-5,2)

I believe the answer is:

car-crash tv

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'disturbing thing to watch' is the definition.
I know nothing about this answer so I can't judge whether this works.

'cold with developing catarrh's very' is the wordplay.
'cold' becomes 'c' (eg on taps).
'with' means one lot of letters go next to another.
'developing' indicates an anagram.
'very' becomes 'v' (abbreviation).
'catarrhs' is an anagram of 'arcrasht'.
'c'+'arcrasht'+'v'='CAR-CRASH TV'

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I've seen this clue in The Times.

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