New washing machine using the same valve as the sink, water smells and tastes like plastic
I am not sure if washing machine hoses are rated for potable water, with that said I used to drink from a hose all the time and still do. If the water smells bad let it run it may be like many appliances that have to offgas a little and the smell/ taste will go away after a while. I would think that the hoses should be rated for use with potable water since they are connecting to the home water supply. If you are concerned contact the MFG they will have the info on the materials used in the hoses and will probably give the same advice that it will go away after a while.