Yes, i notice too that when under stress the odor is worst. It might be due to hormonal fluctuation (flight/fight) in our bodies mixing with the bacteria. I am going to get tested in US, as i'm from there, for TMAU. however, i think it might be due to candida and the need to go off certain foods that is causing overgrowth of bacteria. Hence again why i think when under stress it creates a worse smell - its definitely the gut/mind connection going on. So that is why i dont think i have tmau but i think if i get tested it will relive my mind so i can eat freely of choline foods and that will help some of my stress. Try the foodmap or candida diet, i found when i ate only salad and organic chicken, Celery juice, probiotics, ACV with water for a week that my symptoms got better, my sinuses even cleared up and i've been living with clogged sinuses for years which leads me to believe some inflamation in my body went down due to that diet.