A gas leak somewhere. Check the injectors and make sure the cap is on tight.
Could be an A/C coolant leak.
if your asking about your air conditioning, it could be your refrigerant, but a smell that would more closely resemble vinegar would probably be your coolant
Your 1996 Escort might smell like gas when it is not running because of a damaged gas tank or damaged fuel lines. Leaking injectors or a leaking tank can also cause that smell.
If you smell antifreeze, there must be a leak somewhere. Have the cooling system pressure tested.
Your fuel pump is probably really dirty and your fuel injection probably needs to be replaced. I had that same problem with my 96 Tahoe and when i would idle it would reek of fuel. I went to get all those things replaces, and not only did the smell go away, but my mpg's went up about 3 or 4 g's. take it for a tune up!
Brown suger in your diet can cause this smell.
The trans mission IS probably going out. This is a well know defect in the 2002 Tahoe. Google it.
Either you have a blockage present or your vents on your sewer lines have become blocked or you need to install more vents.
driving it to roughly
bad or failing alternator
If the top is left off of the container it would smell up the whole house.
Type your answer here... I had the same problem with my 96 Tahoe.. Vortec 350. Problem was a blown intake gasket.