1995 Buick Regal exhaust smell & pink fluid leak

Because of the exhaust smell, I have to drive with the windows wide open in summer and winter. The smell gives me a headache and makes my eyes very blood shot. Smell does not go away when I turn off all ventalation. However, when I put on the air conditioning - it minimizes the exhaust smell.

I have white paper under the front part of my car. The leak is a pinkish color.

I need to drive this car for 18 more months before purchasing a new car.

Please help.

Thank you!