Activated charcoal taken at a dose of 750mg twice daily for ten days.
Copper chlorophyllin taken at a dose of 60mg three times a day after meals for three weeks.
Using soaps with a moderate pH, between 5.5 and 6.5. Trimethylamine is a strong base (pH 9.8), thus soaps with pH closer to that of normal skin help retain the secreted trimethylamine in a less volatile form that can be removed by washing.
Taking riboflavin (vitamin B2) supplements to enhance any residual FMO3 enzyme activity. Recommended intake is 30-40mg taken 3-5 times per day with food.
Avoiding factors that promote sweating, such as exercise, stress, and emotional upsets.
Let us know how it goes for you. I wish you the best.