Clean up the mess quickly.
I wouldn't fucking let that stuff sit around long, the stomach acids and those other funky enzymes and **** will ruin the material it's spilled on beyond repair. It will leave a smell that will take a pretty damn long time to clean. If it's on cloths, then use heavy duty detergent. If it's on white cloths, throw it in the wash machine and bleach that ****. And if it's on the carpet, punch him in his gut and have him rent you a carpet steam cleaner or you'll burn his porn and soil HIS living space.