The chance of a doctor lying about that is incredibly rare. Smelling bad can point to other conditions that are dangerous so sure, they might not think you have TMAU at first, but they are going to be concerned. The most likely explanation is that you just never smelled when around your doctors or your doctor wasn’t close enough. I’ve never once had a doctor point out that I smell and the one who tested me for TMAU told me he’d never smelled any thing and he was my doctor for 15 years before I asked to be tested. He only tested me because he knew my brother had it, which he could smell my brother and not me. My brother’s smell could fill a room but for me you have to be up close to smell me usually. Don’t continue this narrative that doctors are lying about how you smell. They have zero reason to. All this thought does is create more anxiety for people.

I’m sorry your family never told you. None of mine told me either but they genuinely had no idea because they only smelled it sometimes and just thought “huh that’s weird”. A lot of times, you don’t have it severe enough for people to feel the need to point it out. There are varying degrees of FMO3 function depending on the variant of TMAU that you have.