In the server room next to my office I have a air cleaner/fan/filter so that I do not have to clean the servers from dust as often. It will ramp up if it detects dust or smell. It will for example ramp up if someone farts nearby which is quite funny. I however have social anxiety, and when I'm on a phone call, or just thinking about talking to someone I don't like, it will also ramp up. I wonder what this smell does to someone's subconscious when I meet them in person ...