We recently purchased a 2017 Oliver that, from our understanding, had been in storage for the past 3-4 years and had not been used. The trailer has a very noticeable smell we have been working to remove. It seems to be stronger with the AC running. We have cleaned all interior surfaces, removed all porous materials (fabrics), and my husband has cleaned both the black and grey tanks and added Auqamax dry holding tank treatment to both tanks. Of note, when we first cleaned the black tank, it had some gross surprises that may have been fermenting for years 🤢
Any ideas on what I can clean next? Could the smells be coming from between the two fiberglass shells? When I was cleaning the interior, I did not notice any areas that looked like there was water intrusion.