How can I masturbate very silent?

I'm on vacation and we live in a little house with 2 rooms and 1 bathroom (I'm supposed to sleep on the couch, thanks dad). Last time I'm getting really horny and I want for 2 whole days to masturbate with my finger in my vagina, not only on my clit anymore. But my parents want to keep the house airy so they opened every door. EVERY DOOR!! How can I have a moment with myself not getting caught..??

Btw, the doors are also open when we sleep..😐