Its been three days since my girlfriend and I had sex in my room and it smelt in the room about 10 mins afterwards so I changed the bedsheets and opened the windows. I haven't been in my house since and came back today to find my room still smelling even though the windows have been open. I was just wondering how long would it take before this sex odour completely fades and is there anything I can do to get rid of the smell? Plus the matress is stained... any advice on that? I need some sort of discrete way to sort this as my parents are back from holiday now aswell, don't really want them to connect the dots!