My air con smells like cat wee when in use and the pollen filter housing also smells. I've read the threads already posted and gone out and bought some comma air-con cleaner and a new pollen filter. Would it be best for me to clean the pollen filter housing and change the pollen filter before using the comma spray or vice versa? Also should i just set the air-con to re-circulate on full cold (lo) setting or use the econ setting? Any help much appreciated.