I just read the paper: Accumulation of trimethylamine and trimethylamine-N-oxide In end-stage renal disease patients undergoing haemodialysis.

They noticed that renal patients had a higher level of Tma and tmao in there blood compared to others but after the dialysis the levels were within normal range. Now granted with trimethylamimuria suffers there will also be higher levels of the tma/tmao but maybe there could be a significant reduction in odour after regular dialysis?
if tmau were able to start the day with tma in the normal rsnge then there would probably be no odour issues until eating.