What is the odor coming from your vehicle air conditioner?
Condensation forms on cool evaporator fins and tubes and collects in the pan. Inlet air brings along contaminants like dirt, pollen and plant and animal debris, some of which is deposited on the wet fins and in the pan. Additionally, if a system spends much time in re-circ mode, it also gathers matter like pet hair and nicotine and tars from cigarette smoke. Another cause could be leaking evaporators allowing oil to coat the fins. Certain evaporators, housings and pans are more prone to accumulating these contaminants than others. Armed with the nourishment (contaminants) listed above, the warm, moist, dark, environs of the housing encourage beasties (microorganisms, mold, mildew, fungi, bacteria, etc.) to form and multiply. Being alive and growing means they produce gas. This gas, a volatile organic compound, IS the problem: its moldy odor stinks. I suggest you do a Google Search or contact your local parts store for products to help eliminate the mold. In the mean time try not using the A/C and running the fan on high in the non-recirculate mode. This will help to dry out the system and help kill some of the mold. Also make sure the A/C condensor drain line is clear.
When the air conditioner on my 1972 Mercedes 300SEL is running there is water on the passenger floor and the heater has previously been disconnected.?
The air Conditioner has a hose that goes to the exterior of the vehicle to remove the condensation from the system which may have dislodge and allowing the condensation to enter the interior of the vehicle, try looking under the vehicle and you may find a hose sticking out try another vehicle with air conditioner on and you will see the water coming from the system and it will tell you where to look. I…
usually the air conditioner drain tube is plugged up, if water doesn.t run out freely when the air conditioner or defroster is on, chances are the evaporator core drain is blocked and the water in the box has begun to smell. The alternate possibility is that someone who doesn't like you has put fish guts in your heater intake.
The Cabin Filter affects the quality of the air in the interior of the vehicle (cabin). For some strange reason, the Odyssey has a smell, a strange odor, more like a musty smell you can eliminate by changing the Cabin Filter. Or, you can simply keep the button for "recirculated air" pressed to stop fresh air from coming in. As such, no air will pass the filter to enter your vehicle.