I'm always very sensitive about the breath of mine. I make an effort to care for it, but at times, I'm a little bit off schedule. I really do not know when the breath of mine really is bad.
For me personally, I just know the breath of mine is bad when the person standing in front of me passes out.
It's quite embarrassing to have bad breath, particularly when you're in the business of extremely sophisticated people. I've bad breath all the time due to my great delight in eating cheese. The Gracious Mistress of the Parsonage warns me all of the time that eating cheese will create bad inhale. I know she is right, but cheese is extremely tasty.

I was boarding an airplane to travel north once the idea struck me I'd eaten a block of cheese before I have to the airport. I was wondering if my breath smelled terrible or not. I tried to test it on myself though it never registered with the nose of mine.

I realize I have a nose, but my nose does not know when you should smell anything. The one thing my nose does for me personally is sneeze, particularly when I'm not prepared. So, I cannot smell things the manner by which the wife of mine does. She is able to smell an odor seven days before it's produced!
Exactly how she does which I will never know and at my stage in life I am certainly not going to ask her.
According to her, bad breath is not healthy, which is the reason they call it "bad breath." The contention of mine is, tooth decay diabetes [image source] bad is a relative idea. One individual smells a proven way, somebody else smells the other way as well as the twain shall never collide. What's harmful to a single person might not be damaging to another person.

I have a pattern of nibbling on cheese. At times, the wife of mine thinks that I am only a mouse. In reality, she uses the term "rat," but that is a unique story. I enjoy cheese. When I come home the initial thing I do is go to the fridge, leave a block of cheese, slice it, go have a seat and enjoy nibbling on that cheese never ever worried about the bad breath it may create.