Why can’t a person smell his/her own bad breath? At least, difficult to?

bad breath
BBHunter asked:

People often blow into their hands or try to breath upward to their nostrils and still can’t tell. Why is this?
Sorry, I chose the category “other” accidentally. I quickly misread “other” as “oral”.
For those that are saying, “you’re used to it”. If 2 people had the same bad breath, you’re saying they can’t smell each other’s bad breath? i’ve seen instances where 2 people with bad breath (same breath when I smelled it) point at each other for having bad breath…and they were both right.

What can cause REALLY BAD breath aside from a germy mouth?

bad breath
jade asked:

Okay, so my breath really stinks sometimes, and it’s not because i haven’t brushed… i always brush my teeth, tongue, the works. I do have my tonsils but they look pink, not white or bumpy. I don’t smoke, i don’t eat garlic or onions. It stinks so bad that people can smell it even with my mouth closed apparently the air that comes out of my nostrils smells too.
I think it’s something in my stomach, cause it does feel a little acid sometimes, but at others i don’t even feel it and people tell me i smell! Also, i don’t stink all the time. I don’t have rotten teeth or cavities. What could be causing this? What can i do to get rid of it?

Rapid Cure for Bad Breath