Cabin air pressure makes my ears pop when I turn on Aircon

[grenouf]

Hi, I have an E92 which I had repaired after an accident. Now after getting it back, whenever I turn on the aircon and it is getting fresh air from the outside, it builds up pressure in the cabin and squeezes out of the top of the window seal from each door making a hissing sound. It seems that this place is the only place air can escape. If I turn the fan on high, my ears feel like i'm taking off in an aeroplane and you want to pop them. I would assume there must be a one way air vent somewhere in any car that would prevent the build up of cabin pressure. Does anybody know anything about where this would be?

[White94RX]

What part of the vehicle was damaged and repaired?

[Codes2]

I believe I have venting in the trunk, beside the battery.
This allows any gasses to be immediately vacated.

All cars have vents somewhere.
Some of mine vented at the rear door frames.

I'm not certain if our E9x have move venting then trunk.