I’ve been told by the shop that repairs only Volvos that my yukky AC smell (and subsequent freon leak) is indicative of the need for a new evaporator/condensor coil (or something like that). And a significant tidbit of info re this issue is that the smell, which I describe as smelling like old, dirty socks, happens intermittently but especially when the heater is running. So $800-$900 is supposed to cure this. Will see very soon.