The Summer Olympics in Rio start early next month, and swimmers, rowers and sailors competing in events in open water are being advised to … well, here it is:

Yuck:

As a result, scientists have advised Olympians interacting with the bay to keep their mouths closed to avoid ingesting the water.

Scientists say that feces from a nearby hospital and municipal sewage plant pours into the water untreated. And if that doesn’t make your lunch rise in your throat, don’t forget that dead bodies — animal and human — are found floating in the bay with upsetting regularity.

Too late for Olympians in aquatic sports to switch to track & field?