Another possibility is that perfumes and other manufactured scents don’t end up competing with a person’s natural odors in the first place. There are a handful of studies that show women tend to select scents that don’t mask their HLA, but resemble it. This is rather profound. What this research suggests is that people may prefer fragrances that smell like them, thus amplifying, not neutralizing, their genetics. It’s a nice idea, but some researchers, like Rachel Herz, are “not very confident about the data.”
— Read more at Can Perfume Sabotage a Budding Romance? at The Atlantic.