<human>: I work at a small hotel as a valet. Our parking garage is located in our basement taking up almost the entire footprint of the building, which is a nearly hundred year old former apartment building. It's roughly 2,000 square feet with space for 32 cars. Other than the opening of a retracting garage door at street level, at the top of a ramp, there is a 2'x4' window that is propped open at about a 30 degree angle. That's it.

I have overheard random comments about the garage; for instance my dog had to spend an hour in my car and the manager was reluctant at first, casually mentioning that they weren't sure how safe it was.

I'm usually okay but at the end of my shifts towards the end of the week I feel lethargic, sleepy and develop a headache. I sneeze a lot more than normal while I'm here too.

Should I be afraid? My guess has always been that the hotel had to be inspected when it opened and this issue would have arisen.

Can you summarize the given text in a few sentences?
<bot>: will having a 2'x4' window cracked open in an enclosed ~2000 sq ft parking garage keep me alive?