This is the 3802nd most frequent Japanese word.
ふわ
Soft, fluffy, or light.
Here, "ふわふわ" is used to describe the fluffy texture of the bread, indicating its light and airy quality.
このパンはふわふわでおいしいですね。
This bread is fluffy and delicious.
In this sentence, "ふわっと" suggests that his voice has a soft and gentle character, creating a calming effect.
彼の声はいつもふわっとしていて落ち着きます。
His voice is always soft and soothing.
The word "ふわふわとした" is employed to depict the fluffy and light appearance of the clouds as they move in the sky.