This usually means that the drain holes are clogged, which causes water to collect where it shouldn't. In a short time, it becomes stagnant and smelly. You'll need to remove the cover from the a/c and clean out the drain holes and probably also the pan underneath it. Don't use anything sharp or metal though.
Why is there humidity in the room when air conditioner is cooling? Room feels damp.
A smell coming from a reverse cycle air conditioner may be a signal that the filter needs to be cleaned. A smell like engine exhaust might be present if the air conditioner motor is in need of repair.
It sounds like there is a leak inthe evaporator section of your air conditioner. If this continues, the air conditioner will no longer cool and you may have to replace several components of the system. The smell is that of atomized esther oil.
because you have too many dead babies in your air conditioner tank
An air conditioner should not smell like smoke when turned on (or when turned off). I would have to suspect that the electrical insulation is burning.
-Spray air freshener -Open all the windows I live in Florida and have my air conditioner on all the time. Whenever that happens (I'm guilty of burning bacon a lot, lol), I take my air conditioner's filter and spray Febreze on it, then put it back into the air conditioner and let the air run. The fresh, clean, and pretty smells get through the whole house, getting rid of the burned bacon smell as it travels through the house. Doing it this way helps spread the nice smell all over instead of having to go from room to room spraying the smell away. Not to mention it lasts awhile too :)
Room Air Conditioner...........
clean it, then spray it with air freshener.
By bringing warm air outside the room
It sounds like there is a leak inthe evaporator section of your air conditioner. If this continues, the air conditioner will no longer cool and you may have to replace several components of the system. The smell is that of atomized esther oil.
there is a leak in the compressor...
Failed compressor