Hey,
With the two problems you've said, I would first check the pollen/cabin filter.
Not many people change this or are even aware it exist so it usually gets neglected. If you find it is dirty then, (obviously!) replace it, and the smell should disappear and the air flow be greatly improved. And whilst your there changing the pollen filter, use those air con treatment/anti bacterial spray.
Hope that helps!
Here's a link showing how to change it
https://www.youtube.com/watch?v=dzY--HU4uco