From the study ...LOL
They sent 10 liberals and 11 conservatives -- home with fragrance-free soap and shampoo and a gauze pad taped to their armpit. The subjects were told not to smoke, drink, use deodorant or perfume, have sex, eat fragrant foods, sleep with people or pets or linger near strong odors.
They returned the stinky armpit pads 24 hours later. Then 125 participants sniffed the stinky pads, taking a break between whiffs to cleanse their nasal palate with the aroma of peppermint oil. The sniffers, who never saw the people whose smells they were evaluating, then rated the attractiveness of each armpit sample on a 1 to 5 scale.