Corrected entry: When Sandra Bullock and the leading man are running through the ship, they smell rotting eggs. He states that it is sulfur. This is incorrect because sulfur is odorless. Hydrogen Sulfide (H2S) is what smells like rotting eggs.
shortdanzr
2nd Nov 2003
Correction: You're corrected your own post. H2S is the SULPHIDE of hydrogen - it is mostly (by weight) sulphur/sulfur. Saying he can smell sulphur (because it is forming aromatic compounds on contact with hydrogen) is perfectly correct.