As the other poster said the fresh air ventilation has nothing to do with dehumidification.
Air exchanger or dehumidifier.
The energy from the warm humid air in the swimming pool room is recovered in the heat recovery section normally in a plate heat exchanger.
In a ventilation dehumidifier equipped with a heat pump the heat pump functions both as a dehumidifier and a dedicated heat pump.
Dehumidifier air conditioning uses what is called spot cooling to control the humidity in a room.
Try the air exchanger.
Tjernlund makes a good one.
You will want to run a dehumidifier in the summer because if you bring air in from outside it will contain humidity possibly more than what is already in the basement.
Call your contractor and have him check it out.
Indoor air contamination continues to rise with time and oxygen levels continue to fall a fresh air exchange is crucial to good long term health.
Dehumidification should be done by a dehumidifier and fresh air exchange should be done by an air to air exchanger hrv erv etc.
I would recommend not running the dehumidifier in the winter.
Ac dehumidifier also has a condenser evaporator and metering device to gauge the air in the room.
Like an erv a ventilating dehumidifier introduces fresh air from outside your home filters it and removes indoor air for consistent circulation.
Air conditioner dehumidifier can be one and the same because the same component found in a dehumidifier is also found in an ac.
In our climate zone the best equipment for ventilating your home and dehumidifying indoor air is a whole house dehumidifier with positive pressure from fresh outdoor air.
If the smell occurred right after you installed the exchanger i would suspect the exchanger either smells or is pulling air from an area that smells.
Cooling dehumidifier heat exchanger main features finned tube heat exchanger type for dehumidification of air by means of condensation by using ice water or other cooling media flowing through the heat exchanger tubes followed by a demister and re heater steam or hot water to heat up the air above the dew point.