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And all of the samples from the kitchens were found to have Staphylococcus and Micrococcus.

In people with weak immune systems, Micrococcus has been linked to lung infections, such as pneumonia and septic arthritis along with eye and heart infections.

They include Cutibacterium acnes, which feeds on the oil on our faces, and Micrococcus luteus, which contributes to the production of body odor by breaking down the compounds in our sweat.

What Prof Nico Boon, Dr Chris Callewaert, and their colleagues, found was that a particularly smelly bacterium called Micrococcus grew in abundance on synthetic fibres, but didn't enjoy living on cotton or on skin.

DNA analysis revealed that Micrococcus bacteria were to blame.