Unlike bacterial viruses, which infect cells bordered by a cell wall, mycoplasma viruses have evolved to enter and propagate in mycoplasma cells bounded solely by a single lipid-protein cell membrane.
Mycoplasma pneumoniae is a type of bacteria that can cause sickness by destroying the respiratory system's lining (throat, lungs, windpipe).
People can have germs in their noses or throat without becoming ill at any moment.
MLO (mycoplasma-like organisms) or PPLO (before) are the terms used to describe these organisms (pleuropneumonia-like organisms).