My neighbour's a/c exhaust is directly opposite to my window, just 1.5 feet apart. I do not have A/C, so I have to open the window to get some ventilation. When I open the window I am worried im inhaling the exhaust air and getting CO poisoning(is it possible !?) What should I do?

Close the window to prevent my room air contaminated with a/c exhaust or open the window by risking it to avoid rebreathing my own co2? Is there any guidelines/values regarding CO exposure in similar scenarios?