Anyone know how to get a tmau test done

I feel like I have tmau because I'm having a Body Odor issue that I can't smell most of the times. Sometimes I can smell it coming from my body but not all the time so usually I'm nose blind to it. People around tend to rub their noses at me and I feel like they have been making fun of me for it and staring at me and making comments. I've been able to handle it well by ignoring people and staying positive but sometimes I get really low and feel down at times. My family seems to not be able to smell it and feel as if it's my anxiety that's causing this and my therapist has said I might have body dysmorphic disorder. I want to find answers to why this is happening and where the smell is coming from. Also I want to get tested for tmau but I don't know how because my doctor doesn't seem to know about it at all. Anyone have any idea as to how I could get one done to see if I have this condition?