Citroen C5 strange noise first start in the morning

[Nyontc]

Hello
I've noticed strange noise when I start my car for the first time in the morning. Here's link:
I have no idea what that is. If I start it for the first time in the morning, it won't stop until I drive for a bit but when I start the car, then shut it down and start again there is not any noise. Please help it happens only when first start in the morning, never after work... I have a/c off in that video

[steveclv]

Sounds like alternator bearing or idler bearing. Remove the accessory belt and see if the noise goes away

[Nyontc]

I checked on YouTube and I dont think that's it
Im taking about that "vacuum noise" check this video I started car in the morning twice and first time you can hear that, second time you can hear only engine...