Well, lets give him the benefit of doubt as everyone has differing olfactory threshold. But apparently, this 'stench', whether it exists or not, does not deter the countless joggers and patrons for the string of eateries along the robertson quay and waterfront hotels.
RG is certainly the largest, spacious and tallest development that is by the S'pore river. Some may not like it? You may want to view the neighbouring apartments as well eg watermark, robertson blue if you really like river view but prefer smaller and cosier ones. The maintenance fee does differ quite a lot for similar size units though.
Happy hse hunting!