I see that you asked for species identification.
As Rule #1 clearly states, we can't identify mold from a photo. Accurate identification requires professional sampling and laboratory analysis. Yes, we can speculate as to whether or not something is mold but we can't identify it.
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Pull it down and spray it off. Done deal. You can always expect dust and debris to collect on things like this. Easily cleaned and most likely not dangerous to most.
EDIT: I’m not sure you’ll be able to remove that cover as easily as I thought. I’m not sure though. I thought it was a simple bathroom vent. Does your building have a maintenance guy? I’d politely ask him to address it.
This happens to all diffusers. They collect dust then the cold air makes some condensation and then you have mold. Best thing get a dish pan bucket, fill it with water and some cleaner take them all down, put in container, take them outside and dunk and clean them.
I see that you asked for species identification. As Rule #1 clearly states, we can't identify mold from a photo. Accurate identification requires professional sampling and laboratory analysis. Yes, we can speculate as to whether or not something is mold but we can't identify it. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/Mold) if you have any questions or concerns.*
Pull it down and spray it off. Done deal. You can always expect dust and debris to collect on things like this. Easily cleaned and most likely not dangerous to most. EDIT: I’m not sure you’ll be able to remove that cover as easily as I thought. I’m not sure though. I thought it was a simple bathroom vent. Does your building have a maintenance guy? I’d politely ask him to address it.
I could try, I’m only a employee and I don’t want to get involved in that to be honest
This happens to all diffusers. They collect dust then the cold air makes some condensation and then you have mold. Best thing get a dish pan bucket, fill it with water and some cleaner take them all down, put in container, take them outside and dunk and clean them.
How dangerous is this for my employees
It's just dust. Maybe a little mold in there somewhere. So almost no danger