The quote "I do hope so. That woman has halitosis of the soul" from M.C. Beaton's book "Agatha Raisin and the Wellspring of Death" reflects a sharp and humorous criticism of someone's character. The phrase "halitosis of the soul" suggests that the person is not just unpleasant to be with but has fundamental flaws that affect their nature and behavior.

This line captures the essence of Agatha Raisin's character, known for her witty observations and bluntness. Through her interactions with others, she often highlights moral or ethical shortcomings, leading to both comedic and serious reflections on human behavior.