EMD+regales+his+nose

In this particular line "regales his nose" the author is trying to describe that the rose the man is holding letting off a sent that entertains his nose. I think that "regales" the word the author is using to describe what reaction the nose is getting from the sent is a powerful word, but it does not flow smoothly through the words. Thats why at first, the line may be confusing to some. Two alternatives for that word would be excite or arouse.

Once the line is understandable, I think it shows how this man rarely encounters such a rich sent. Being a laborer it must be rare for him have the opportunity smell the sent of delicious foods cooking or fresh cut flowers. The author does an exceptional job showing this. Great observation!