Yeah Dave I remember the sewer smell that used to wafe from Hilo Bay on those warm summer nights back in the day because the sewer outfall extended only a short distance from the shore.
If it wasn't the sewer smell , the bay was often clogged with the bagasse from the Hilo sugar mill.   If any of you have gone to Bangkok, Thailand, you will remember how the smell of the sewer permeates the city everywhere
except near the large river that runs through the city.
Hilo bay is pretty clean now and it is a good place to catch crabs because of the sandy bottom.