I know I have different smells with different moods. My husband is an even-keel kind of guy though, doesn't get depressed or swings in mood. He is always able to express himself, knows when he is unhappy (like during the winter, he doesn't like winter weather, has already bugged me about wanting to go to Florida in January) and gets it out of his system emotionally so maybe he doesn't build up any smell? Hmm, I'll have to try that, "talk" more and emote to him instead of "brooding."