Kena Upanishad 3.7

3.7

1.3.7
atha vāyumabruvanvāyavetadvijānihi kimetadyakṣamiti tatheti ||

Atha, after that, they said to Air, "O Air, find out" etc. bears the same meaning as before. Vāyu (air) is so called because it blows, goes, or carries smell. Mātariśvā means that which travels (śvayati) in space (mātari). Idam sarvam api, all this. ādadīya, I can take up, blow away. Yad idam pṛthivyām etc., is just as explained earlier.