Virtual experiment, please explain regarding nitrifying bacteria in aqueous solutions, how they transfer in air currents even though they aren't spore formers: Sterile glass beaker and sterilized, distilled water sets in a biology lab on the counter with no lid. Microbe count is zero so far. No direct physical transfer of contaminants occur. Say you left the container opened in a room with circulating outside air via AC, no special positive air pressure provisions for a month. There is sufficient fluid to account for evap and still leave fluid for testing. Prediction: what kind of microbes will be present, how will sterility be affected, and can any of the biofilm/bacteria in the sample be comprised of nitrifying bacteria that traveled the airborne contamination route?