Air bricks - Is it acceptable to open up a vent to the inside of an attached garage?

2 out of 3 air bricks on one house wall have been blocked by a conservatory base. The nearest outside access is to the attached garage.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).