So has anyone ever noticed a sulfer/rotten egg smell in their boat? I have been noticing it the last few times we have used the boat and it was really noticable last night. I have had it before in my old boat and finally tracked it down to one of the batteries going bad. So when i noticed it recently i figured it was the battery but there is no smell at all coming from the battery compartment and absolutely no corrosion. I can smell it when i take the cover off after towing and even when we are out cruising in the boat. After getting home from the lake last night i pulled off the cover and it was really strong until it aired out. I searched everywherre (sniffed actually) and could not find the source. I decided to open the engine cover and remove the storage tray on top and it seemed like there was a stronger sent there. My engine is spottles and no water at all. I can't think of what might be causing the smell in the engine compartment. Any thoughts??????