Wow. It would be abnormal to smell yourself or your own room.
It can be a symptom of AS to be able to smell yourself, you know. If something with your sense of smell is seriously dysfunctional.
The normal nose becomes used quickly to familiar smells. That's why when a normal person enters an unfamiliar room or a room that they've not been in for hours, they should smell something for a moment. And then slowly that ability to detect the smell will vanish. Your sense of smell has become used to the change. That's normal and has its use and reason.
It would cause an overload to the senses if permanent stimuli wouldn't be ignored by the brain.
So if you wonder about whether your sense of smell is, like, worse than that of others, don't try to identify how you smell. That's usually impossible, you see. Even if you'd reek or smell perfectly. It just won't work. It only works if you suddenly start to smell - like when you would do sports and sweat and use a deo. Then, for a moment, you'll be able to smell how you smell for others.
Rather try to smell the perfume of others rooms, apartments, other people, of deodorants, foods and such. Smells that are new. That would give you a far more accurate idea of the quality of your sense of smell.
As for taste - it can be that the intensity of texture overrides the taste for you. That's another possibility, but you'll have to figure it out yourself.
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Autism + ADHD
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The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it. Terry Pratchett