Hey fellow Mazda enthusiasts, I bought a used 2019 2.0 petrol auto CX-5, and since day one, it’s been making this whirring noise as shown in the video. Wondering if this is a normal sound or if I should be concerned? The noise is more noticeable on cold starts and varies in pitch with RPM. Interestingly, it tends to fade away once the car warms up (usually in about 10-15 minutes). Any insights or experiences with this issue? Thanks in advance!

https://youtube.com/shorts/3Q4VbG8hdRw?si=fd4ZQmidSw2vO4hb

 

Not normal if the sound you are experiencing is someone blowing their nose??? lol
My first *"GUESS" is the breather hose may be dislodged or broken?

*guess
estimate or suppose (something) without sufficient information to be sure of being correct: