"Swapping spit" isn't really hyperbole, and everyone at your party went through the excruciating rounds of mistletoe makeouts not all that long ago. Do you really want to ring in 2017 with a fully body ache, a fever, a sore throat, a hacking cough, and a nose that won't stop running, no matter how red and raw you've wiped it already? I didn't think so.
Look around the petri dish — I mean, room — and know you are now the protagonist in an outbreak film. This shit is Contagion. You in danger, girl.