Getting a skunky smell for the first couple of seconds when turning on the shower and running the hot water. Took off shower hose and head and put in a baking soda/vinegar solution for a couple of hours. The hose still smelled after doing this so think the plastic hose needs to be replaced since it evidently has been infiltrated by something causing the smell. We were at a campground in May that had a high sulfur content in the water and suspect that may have compromised the hose since we did not have the problem before that. Shower head appears to be OK. Secondly, getting a musty smell from the shower drain. Went behind the storage wall and removed the shower p-trap and cleaned. Also cleaned up the stand pipe to the drain. After doing this, the smell is still there. Since the p-trap is full of water, the smell must be coming from the pipe going from the drain to the p-trap. Both Air Admittance Valves have been replaced by Studor valves in the bathroom sink and kitchen sink. Have used a baking soda/vinegar mix in the past down the shower drain. Also have put a bleach mixture down there to possibly help. Running out of ideas on how to fix this smell issue. And yes, I have replaced the anode rod also and run a bleach mixture in the hot water tank.