Despite the similarities, methylene chloride (or dichloromethane) is superior to ethylene chloride as an extraction solvent because the boiling point of methylene chloride is lower than the boiling point of ethylene chloride, which allows it to be removed more easily.
The first and advisable thing to do is to Clean up the vomitus carefully using Standard Precautions since there's a high chance of the vomitus to be infectious.
