The lifts strange smell

Sam was stood in the lift, slowly going up to floor 111; he was on floor 3.
He could feel something building up in his stomach, could he hold it in for anther ten minutes? He didn't think so. As the air built up inside him, he started to worry. There was at least another five people in the lift. What could he do? Should he cough loudly and then just let it out or would the smell give him away. Now he had a problem. NO! He let a touch escape and the smell immeditely filled his nose. Don't risk that again, he thought. Floor 100, he was nearly there. His fingernails were digging into his palms. Only a hurricane could save him now. People were now starting to stare at him, the smell must have spread.
Prrrrp! It escaped, now he was getting astoundingly bad looks and as he looked around at each person, he watched them slowly lift there hand up to their nose. Damn! He was only at floor 108 but he should get out of this lift now!
As he heard the ding of the door opening, he rushed out and went straight to the toilets on that floor.
How embarrasing was that!