Question about humidity control

Hello, Simple question about air exchanger and humidity control.

So I am new in this apartment and never had an air exchanger system and I am not familiar with how it works.

Been here for about a month and it always smell so good and clean. But yesterday night I thought the air was too dry and I've put "more humid " on the humidity control panel. Today I have been woken up by an awfull smell of cooking ( fried rice, ramen, I don't know) . The smell was so strong. I changed the humidity control to where it was and putted a scented candle and the smell was gone.

My question is , does the humidity level is related to the smell of cooking that enter my apartment or not?

At first I thought maybe the smell came from the neighbors through my door but I've looked in the hallway and the smell wasn't from there.

If there is typos sorry English is not my first language.