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Rinse your hands off with water. Rub your hands on a stainless steel faucet for one minute. Wash your hands normally with soap and water.
Stainless steel can absorb the fishy smell, but not the solid fish pieces. Start by rinsing off your hands under the faucet to remove any remaining fish pieces. While there are proponents of using hot water or cold water to remove odors, there is no official difference between the two. Just make sure the water is clean and flowing. Proponents say that certain molecules in stainless steel bind with odor molecules and reduce smells. Rub your hands on the faucet or another stainless steel appliance in your kitchen. Remember to rub the front and back of your hands on the steel so it absorbs all the smell. There are also special stainless steel bars designed for removing odors. If you don’t have a stainless steel faucet in your home, you could try ordering one of these. Keep in mind that they can be fairly expensive and cost up to $30. After rubbing your hands on the stainless steel, remove any remaining fish pieces with a thorough hand washing. Rinse your hands completely when you’re finished.  Wipe down your faucet well after rubbing your hands on it. Although stainless steel absorbs odors, any fish remnants left behind can start smelling again. Use a cleaning wipe to wash off the faucet when you're done. If the faucet still smells after this, try one of the other methods for removing fish smell on it.