how can you smell something that is not there?

By being straight out of Comtein - There's trouble in the streets tonight I can feel it in my bones - had a premonition that he should not go alone - knew the gun was loaded but didn't think it would kill - ever thing exploded and blood began to spill - sorry it had to turn out like this but someone had to loose it's just the nature of the business it's the smugglers blues (just goofing around on a Saturday night) Cheers and happy weekend!

Inflammation of the blood vessels of the nose can often lead the individual to literally smell the blood in their own sinus cavities.  This is a common symptom of those who have severe allergies, those suffering from advanced alcoholism and associated broken capillaries in the nose, and heavy users of powdered cocaine. 

Phantom smells are symptoms for many many things.  Do some research instead of asking this site.  Talk to your doctor.   Don't accept a "don't worry about it."  There is a reason for it.  Find it!! 

maybe you just dont see it