I was considering the TCL Fresh Air series but the price is on the high side.
1) ability to remove odor in the room
- Logically I don't see how this would work. You want a closed system where the air in the room stays the same while being purified by charcoal filter either from your aircond or a purifier unit. Everytime you introduce fresh air in, the air will be sucked into the aircond unit and needs to be purified by the charcoal filter which does not guarantee odour free air. It is much better to let the air in the room stay constant without "fresh" air and let the charcoal filters do their work.
2) maintain the humidity level of the room (because suck moisture fresh air outside the room)
- Might be better to have humidifier device in your room or some airconds may have humidifying function?
3) power consumption of the aircon (since this aircon suck and exhaust air, will it consume more power to maintain cool air)?
- Definitely will consume more power. You want your room to stay at constant temperature so that the inverter unit will slow down the compressor just enough to maintain temperature. If you introduce fresh air, the hot air now needs to be cooled down which then makes the compressor works harder......you get the idea

The plus point I see with such designs is that if you have health conditions such as asthma or difficulty breathing in a small space for long hours (you hardly open close doors) or if your house ventillation is really terrible that you would need "fresh" air in the room.
I notice there is a sales of TCL Fresh In 2.0 when pass by TCL Sunway Pyramid store last week.
So far, I only see similar pricing on Lazada/Shopee for this model during big sales like 6.6