Pollen filters ensure that your air conditioning is free of pollen, exhaust fumes and other particulates, that can make driving an uncomfortable experience. Pollen filters are either impregnated with active carbon in a single layer or made with 2 layers; one carbon (anti-pollutant) and one polyester (anti-pollen). Either way, the filter will act as a barrier against unwanted odours and bacteria. Most filters are also supplied with an anti-bacterial spray to keep the air conditioning pipes clean. Its not a bad idea to have all the pipework cleaned as well as the filters as they can harbour germs in odd nooks and crannies but if you are on a budget its the last thing I'd look at.
It may be possible to change this filter yourself or get a boyfriend to do it.
Agree with other comments on steering assemblies
Not so sure about the Parking brake cables but don't want you to run into trouble.
most parking brake assemblies I've had anything to do with have been steel cables. A single cable runs from the brake lever toward the rear of the car. It then splits into a Y with a cable running to each wheel.why the mechanic is telling you its swollen is lost on me. How can a steel cable swell?
Parking on even a slight incline with no parking brake could be a disaster so get it checked by another mechanic cables could cost 20.00?? each. fitting around an hour. Get both done.
sorry the pic is off an older model.