You must not sneeze. If you have a vehement cold you must...

You must not sneeze. If you have a vehement cold you must take no notice of it; if your nose membranes feel a great irritation you must hold your breath; if a sneeze still insists upon making its way you must oppose it keeping your teeth grinding together; if the violence of the pulse breaks some blood-vessel you must break the blood-vessel -- but not sneeze.