Read the passage and answer the question that follows.
As I slung my pack onto my shoulders a big mosquito thudded against my cheek. There had been a few through the day, but it was early in the season - the ice had gone out just two weeks before - and I had scarcely noticed them. But now as I walked down the ridge, the last breeze faded, and they were on me. Rising in clouds from the soggy tundra, they pelted against my face. I reached into my pocket for the repellent and came up empty.
The traveler could not feel the breeze because _________.