Take out your camera, aim at her & tell her
"You have the right to remain silence, whatever you cough, has been recorded, this can be used to testify u in court that you are not doing your part in minimising SARS from spreading to the rest of the people on the bus. Please Cover your *(#$^%^ mouth when you cough."
That'll shut her mouth I guess.
Often when you have evidence at hand, ordinary folks will be scared of "garhment"
Coughing is still ok, there are times when I actually see an old man cough & spit out phlem on the floor of the bus, not once, not twice but many times. That's what u call unhygienic. :sweat: :sweat: :sweat: