I was in the middle of a 7-gallon brew, when my landlord informed me that the grain that I had put down my garbage disposal had clogged the main drain for the house. My sink is too small for an ice bath for my kettle, so my cooling plan had been to use my copper immersion chiller. But, with nowhere to put the waste water (I am nowhere near the ground floor, and there isn't an outdoor hose I can access), I had to air chill the recently-boiled wort.
I saran-wrapped all of the gaps in the brew kettle (the edge of the lid and the aperture for the thermometer, which I left in), and left it to air chill. It took two days until the wort came down to fermentation temperature, at which point I removed the plastic wrap, spritzed the outside of the kettle with sanitizer, and dumped it into primary. It's currently aerated and fermenting away.
How worried should I be about contamination that may have occurred during two days of air cooling this wort?