When a guy says you smell good?

Yesterday, I was with my guy friend and we were sitting really close in the car. And then he told me I smelled really good, and kept saying it. And then he said I smelt so good that he could fall asleep to my smell... I didn't know if he was just being nice or what, so I said thanks but ha ha was he coming on to me or what?
When a guy says you smell good?
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