We’ll have to identify them by their other traits. One of which is body odor. I tried to find the study but the big engines are hiding it, it essentially said that the most objectionable body odor of any group they tested was jewish. That may be memory holed, but I thought it was interesting. I think they were trying to see if scent could indicate attractiveness. This was a long time ago, nothing like that could be published now. They had test subjects not wear any deodorant or perfume and wear a white cotton t-shirt to sleep in. They then had other testers smell the shirts and guess the attractiveness. I’m also guessing they weren’t allowed to shower, but I’m fuzzy on that detail.