

You need better air flow.
I had the same issue as a student, when I lived in that pocket-sized 1 room ‘apartment’ with barely any airflow coming through a single and tiny window. The only solution I found to be working was, each morning, to lift the mattress and store it on its side with the bottom/downside face part of it not facing the wall, and let it like that for the rest of the day. The air would do its magic.
I also raised the bed frame that was very close to the ground.
that’s why, as a mere user myself, someone that will never be able to write a line of code, let alone develop an app, I still want my apps do be Free/Libre software. I want for those many more competent people all over the world to be able to identify any such a turd and flush them down the drain. I don’t trust any corporation to do a good job at that, even Apple (disclaimer: I use an iPhone…)