verb/ɛtʁ ɑ̃.n‿ɔ.dœʁ də sɛ̃t.te/
to be esteemed, to be popular, to be thought highly of; to be in favour with someone, to be in someone's good books
Probably from mourir en odeur de sainteté, from the fact that certain saints were said to emit a good smell after their death; compare English odour of sanctity.