AC air conditioning window units?

Question

Do window air conditioning units give off carbon dioxide or any other poisonous fumes? My central AC is broken so I am using a small 6500 btu window air conditioning unit. It is sitting in the window of my kitchen door so the heat & water drip into my garage. The kitchen door opens into the garage (25' x 15' - 20'). Is it safe to do this? It feels like it's 150 degrees out there. There is a 2' x 2' hole (covered w/screen) about 8' high on the opposite wall (an ac duct used to be there) - am hoping that is good enough for ventilation. Living space inside is 1100 sq ft - is a block house in Miami.

Answer 1

no they exchange hot air, and moisture,

yes its just venting the heat exchanged to the garage,  

Answer 2

you don't need any ventilation window AC units are safe to use

Answer 3

no, they don't.