I definitely cannot smell myself and I don't have mental problem as well. The examples I mentioned above are just few of them. I think the fact that it smells fecal in my presence gives some people a green light to pass farts. Afterall, it already smells bad. And it can be easily blamed on me. Sometimes, people tried to pass gasses but it awkwardly came out loud and they emberassed themselves. Happened three times in school. But I can't smell myself at all. The odor is very strong. I assume it fills an entire room.