While we’re all freaking out about Ebola, here’s yet another thing to worry about catching: If someone with a cold touches an office doorknob, within four hours that virus is found on the hands of half of the people who work in that office, according to a study by the American Society for Microbiology.

The most contaminated surface?

The common coffee pot.

The good news?

At least your coffee pot can’t give you Ebola.