Hi there, I was curious if I could get opinions on this. Moved into these apartments quite sometime ago, but now that the weather is getting cold, we've decided to open up our windows for the last few weeks. I noticed these spots in summer but brushed it off as it was probably dirt. There are 3 levels to these apartments and 5 different buildings, each 3 levels. I'm assuming they do testing on these every year? Maybe not. It's all over the stairs and railings as well. Does this look like black mold or just dirt. It does look pretty dark but I don't know if it is completely black. I got up close to some of the spots and they are pretty large in size, the girth being like the size of little pebbles (quite a bit bigger than sand), I don't remember mold ever forming in these bigger pebble sizes, I always thought they were more velvety and flat, and grew in corners and stuff. I could be wrong. The hangers of wood above is because we are on the 2nd floor (middle floor) and there is people above us and below us. I'm concerned because we had the windows open, and my girlfriend is pregnant. What should I do? I feel like if I reach out to the landlord then nothing will be done, and something should have already been done about it. The black spots seem to form near the cracks of the wood. My only other thought is that since there are people above us the dirt from the floor is draining down when we get rain and forming this after drying. We are in the midwest.
Thank you all!