Another last ditch option:
Mentholatum is available here and like we did all through the 60's and 70's, that smeared belowthe nostrils and along the sides of the nose and the forehead with a towel over your head over a bowl of steaming water works wonders. Just be sure to keep your eyes closed.
Combined with a face mask, it's also a good way to avoid smelling the guy next to you on the subway.
