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Microbiologists revealed on Monday that thousands of organisms live in the tiniest amount of saliva, so when someone double dips, the bacteria can transfer and multiply.
Norovirus, streptococcus (a sore throat), and herpes simplex ( the cold sore virus) could all be lurking in your favorite sauces if just one party-goer has double dipped.
They also revealed which dips are the worst for harboring dangerous viruses.
A test of three popular dips - taramasalata, humus, and sour cream - revealed that the runnier the sauce, the easier it is for bacteria to grow and multiply.
In just two hours, there was more than 100 times more bacteria in the pot of sour cream than an uncontaminated sample.
Bacteria also grew quickly in taramasalata, where there was 50 times more bacteria.
There was little bacteria growth in the pot of thick humus.