Question: Why does my water smell like rust in my camper?
Answer: The rust smell might be coming from your water source or your hot water tank. If the source of the rust smell is the outside water supply, you can try to get rid of the smell by filtering your water with a good whole house filter that eliminates rust, chlorine and other tastes.
Another source of rust smell could be your hot water tank. If it is your hot water tank then it will need to be drained and flushed. This is something that should be done every year anyway.