As many as one in 15 Americans over the age of 40 experience phantom odors. That's according to a study published in the journal JAMA Otolaryngology-Head and Neck Surgery. Sadly, these aren't scents of roses, freshly cut grass, and cooked bacon, but more unpleasant smells (think: burning hair, rotting eggs, and ashtrays). Phantom odors are a little-understood phenomenon and why exactly we get them is a bit of a mystery. Researchers suspect it is related to overactive odor-sensing cells found in the nasal cavity or even a glitch in the area of the brain responsible for interpreting odor signals, but this is still guesswork. We do, however, now know a little bit more about who gets them – and how prevalent they are across the US. Researchers led by Kathleen Bainbridge from the National Institute on Deafness and Other Communication Disorders (NIDCD) at the National Institutes of Health (NIH) analyzed data from the 2011-2014 National Health and Nutrition Examination Survey (NHANES). In total, 7,417 adults 40 years and older were involved. One in 15 (6.5 percent) reported having smelled a non-existent odor, a little more than what was found (4.9 percent) following a similar study in Sweden last year. But this result was not spread evenly across the entire population. Women, for example, were roughly twice as likely to experience phantom odors than men. It was also much more common among people from a lower socioeconomic background, with those in the lower income brackets 60 percent more likely to report phantom odors than those in the highest. The researchers suspect this may be because they are more likely to be exposed to pollution and toxins in their daily life. What Are Phantom Odors And How Many People Get Them? I have never had that.