When we drink alcohol, its "flag" precedes us, and enjoyment of large amounts of garlic or onion can often be detected by others the next morning. However, our breath does not only betray what we have consumed; some diseases also produce telltale breath odors. Breath analysis has some interesting advantages for clinical diagnosis, for example, unlike drawing blood, it requires no puncture. However, it has proven to be difficult. [click link for full article]
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