You might think it’s totally innocent to sneak a second scoop of salsa or queso onto the same chip, but double-dipping actually sends a significant amount of bacteria on a one-way ride from your mouth to the bowl. This video from New York magazine shows just how much bacteria you leave behind in three common dips and highlights the health risks associated with the habit. The takeaway: Spare your friends and family from secondhand spit and save it for solo snacking.

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