What does water smell like?

Plain water itself should have no odor. However, water can have different odors depending on the source. Drinking water sometimes smells like chlorine, and you might also smell the Plumbing in it (plastic or metallic odor). Spring water smells like the minerals in it. Ocean water smells salty, but it may smell like crude oil after a spill or pipeline leak. Local ponds may smell like mud and fish. Local lakes might smell like mud, fish, and outboard engine oil. Water in a toilet likely smells like body waste unless the toilet was just cleaned. Water in an aquarium will smell like fish (or at least the bacteria which helps clean the tank).