Well you should start by replacing those. Since this isnt in a generation specific forum, the year of your car will help also. I dont really see how antifreeze can make it into the driver/passenger compartment though. Have you tried pulling the carpet away and sticking your head under the dash to see where the leak could be originating from?im not sure where to post this but i have a problem wuth my water and anti freeze leaking in to the passanger side floor board so i was wondering if any one had any ideas the history of the care is the guy before me put nothing but water in the car with no anti freeze and it froze and cracked the head waterpump and radiator so i think it has to do with that any help thanks
qftif its leaking in your floor board its the heater core. the heater in most cars is heated by the hot antifreeze. blower motor blows on the core thus blowing hot air into the car.