A mask helps, but not enough.

In really cold weather — -15°C and below — I wrap a big muffler around my face, I’m outside just long enough to dash from car to door, or door to car, and I’m generally okay. But at the beginning of winter, it doesn’t matter what I do; the attack eventually hits, I go back on the inhalers, and the coughing levels out by Christmas if I stay upwind of all the respiratory viruses.

Four doses down, I feel more or less normal again. Better living through biochemistry.