This is the 1120th most frequent Polish word.
powietrzu
"Powietrzu" means "air" in the locative case in Polish.
In this sentence, 'powietrzu' figuratively describes the atmosphere or feeling experienced in a particular environment.
W powietrzu czuć napięcie przed egzaminem.
You can feel the tension in the air before the exam.
The word 'powietrzu' is used here to indicate the medium or atmosphere where the smell is present.
Czuję w powietrzu zapach kwiatów.
I smell flowers in the air.
The word 'powietrzu' refers to the space above the ground where the birds are flying.