8-hours to grow fungus on cooked food seems far too fast.
I am not an expert on this. You should find an expert on this either here or in your local community to look at conditions in your apartment.
My concern is that you may have fungus/mold elsewhere in your apartment (perhaps behind the dry-wall i.e. in the walls) or elsewhere, and that this fungus is releasing spores that're growing in your ramen.
As a preliminary measure, I suggest improving the ventilation by keeping the windows open and maybe the front door to create a cross-breeze.
Do you have access to a free medical expert like a doctor or clinic? I would go there as soon as possible and tell them about the fungus growing on your clothes, growing on your ramen after 8 hours, as well as your migraines and any other problems. They may be able to contact the correct authorities if there is a public health hazard.
Once again, I am not an expert and have little direct knowledge about this; however, in all my experience living in very hot and humid climates I've never seen fungus grow on cooked food left out over 8 hours. I hope the other LWers here can provide better clarity into whether my concern is valid.
I'm not an expert either, but I think there's enough evidence to be pretty certain there's a problem. I don't know whether the authorities in Hungary are likely to be helpful, or what kinds of cleaning services are available or how much they cost. It might even be worth moving to a different apartment.
An exercise:
Name something that you do not do but should/wish you did/are told you ought, or that you do less than is normally recommended. (For instance, "exercise" or "eat vegetables".)
Make an exhaustive list of your sufficient conditions for avoiding this thing. (If you suspect that your list may be non-exhaustive, mention that in your comment.)
Precommit that: If someone comes up with a way to do the thing which doesn't have any of your listed problems, you will at least try it. It counts if you come up with this response yourself upon making your list.
(Based on: Is That Your True Rejection?)
Edit to add: Kindly stick to the spirit of the exercise; if you have no advice in line with the exercise, this is not the place to offer it. Do not drift into confrontational or abusive demands that people adjust their restrictions to suit your cached suggestion, and do not offer unsolicited other-optimizing.
To alleviate crowding, Armok_GoB has created a second thread for this challenge.