Use it to softly express a lack of fascination or enthusiasm without being rude. The lecture on quantum mechanics is important, but it leaves me cold.
Pro Tip 2/3
Emotionally Neutral
Shows absence of excitement or emotional impact, can imply high expectations not met. Everyone raved about the new restaurant, but the meal left me cold.
Pro Tip 3/3
Reaction to Hype
Often used when something well-praised doesn't meet personal taste or expectation. Despite winning awards, the novel left me cold.