Question: I am a female and my husband and I have recently engaged in anal sex. It felt very good, but when we did that my vagina made noises sounding almost like a farting noise can you please tell me what this noise is and if it is normal.Answer: Air can get trapped in the vagina during intercourse. They even have a slang term for it, "queef." When the air escapes it can sound like you are passing gas, because the vaginal walls are moist and form a bit of a seal. It is normal even if it is kind of funny sounding. During anal intercourse, I would guess your vagina relaxes and allows air in when he withdrawals, and when he pushes in the air is pushed out; since the vagina and rectum are so close together. I wouldn't worry about and try to have a sense of humor about it. You can read one woman's experiences with this at the link given below.
http://www.myvag.net/noises.html
Inserting your fingers, a slim dildo, or a vibrator into your vagina may prevent this from occurring if it is distracting.