The Thunderbird entered production for the 1955 model year as a sporty two-seat convertible. Unlike the Chevrolet Corvette, it was not marketed as a sports car. Ford positioned the Thunderbird as an upscale model and is credited in developing a new market segment, the personal luxury car.
When you have excess air in your stomach, it usually comes out as a burp. Usually the burp will have a smell of the food that you ate, but sometimes it will come out smelling like rotten eggs. This is a condition that is known as sulfur burp, and they can be very embarrassing and unpleasant, especially if they happen in the presence of others.
1 This may cause odor in burps. 2  There may be food stuff in the stomach that is left undigested. 3  It may be gastro duodenal ulcer or just sluggishness of digestion leading to fermentation and production of bad toxic gases leading to smell in burps like rotten egg or sulfurous odor.