Smelly water after 3 days

Thanks All for the tips. Due to health problems, I'm docked Full-time in Florida. Have flushed the freshwater tank several times with bleach, change White drinking hose 3-4 times a year and use a different color hose for Black water flushing and any outside needs. Since I'm docked, I use my water numerous times a day, I would think that should keep the algae and bacteria My Fifth Wheeler is an 04 Carriage Cameo. Not sure if there is a rod in the water heater. I do have an under sink Everpure water filter for drinking water only. I'm thinking of replacing the water hose with PVC pipe buried 6" deep connected to the Water Softener by a short section of the white drinking water hose and from the softener to the house with another short section of hose. I kept the softener inside of a 3 sided covered box(?) made of 2 inch aluminum covered foam insulation to keep it out of the sun. My next attempt to sanitize the pipes will be one suggested by the retired pool man. Also will take the strainers and heads off the faucets to allow the water to run with no restrictions incase there is any gunk in the lines.