I think I have a leak (need doctor's diagnosis)
 

The car is make a whistling noise that appears to get faster as I accelerate. It sounds like someone is letting air out of a ballon and pinching the end at the same time, its that sound. What I also noticed is that my A/C and Heat smells like complete a$$. It gets better if I dont let it outside air but when I hit that circulation button the whole car reaks of old people. I know its a little stupid to ask online about small problems like these but I figured someone might have had the same thing happen to them. Any clue to what this might be and how urgent it is to fix?

Thanks!

do you have an aftermarket intake?

If you just put in an aftermarket intake, that sound might be normal. The smell might be bacteria, I would get some Lysol and spray it (I dunno what it's called) but those vent things by the windshield wipers.

Intake is stock, and no this sound is anything but normal. I know the custom intake whistling sound but this is more like air escaping a pinched balloon. It happened every few days but now the sound is constantly there and has gotten considerably louder. If I just rev the engine while standing there is no sound but once I start moving the wheels it starts whistling, getting progressively faster as I accelerate.

As for the smelly A/C, if its not related its probably because the car was owned by an elderly smoker for 7 years. How long do you suppose it would take for this smell of death to dissapear? It is particularly bad when you bring in air from the outside for some reason.

i have that same problem, its cause of my intake :(

The only thing I did to my intake was change the filter so I dont think it could be that. Unless something came loose around there.