There is nothing wrong with Wasa. Its a good operation and I doubt if it has a smell.
This is from the original assessment before the subdivision was made;
4.4. OPERATION OF SEWAGE LAGOON
4.4.1. Establishment of Buffer Zones
Buffer zones around the sewage lagoon are required for three reasons- odors, disease transmission, and tertiary treatment-and an additional buffer is required between the coast and any area of cleared mangroves. A buffer is required between the lagoon and any inhabited area to control odors and transmittal of disease by insects or birds. A buffer of 300m has been established for this purpose, and this distance will also be maintained from the terminal building at the proposed new airport. Figure 1 shows this buffer extending from the lagoon to the south, east and northeast.
Because the 'polishing' of sewage effluent requires the continued growth of mangroves and functioning of ecological processes within the mangrove wetland, the area of mangroves that will receive and treat the effluent from the sewage lagoon must remain in its natural state for that purpose.
It goes on but you get the point.
if you look back at the photo at the beginning of the thread you can see what happened to the mangrove buffer zone.