Re: Fishy Smell
3 solutions I can think of:
(1) One forumer (Piggyboz, if I am not wrong) had previously suggested switching your air con to heater mode and full-blast for some time to kill the bacteria causing the odour;
(2) Buy some carbon (not in the raw form) to absorb odour. You can get these in DIY shops, Autobacs ......
(3) There is a company doing recyling of air in the air-con system. They basically "flush" and cycle the air within the aircon system, and remove all the bacteria which causes odour. It was highlighted in one edition if the HOTSTUFF magazine. Effectiveness unknown, though.