Place the exhaust fan inside the room with problematic odor. This could be a pet room or a dank basement.
Attach the exhaust ducting to the outlet side of the exhaust fan. The ducting is a long, flexible tube that can move the air from the room to a specific location, like a chimney or another room.
Place the activate carbon filter onto the input side of the exhaust fan. Commercial carbon filters made for indoor hydroponic gardens all conform to the same standard duct size, so you should be able to slip the carbon filter right onto the inlet of the exhaust fan.
Turn on the exhaust fan. The air coming out from the other end of the ducting should have dramatically less odor than the room itself. Over time, the odor levels in the room should deteriorate as volatile odor molecules are exhausted and absorbed by the carbon.