Many moons ago, in an SF anthology such as I used to consume in those days, there was this little story about these three astronauts who travelled for 500 years

Many moons ago, in an SF anthology such as I used to consume in those days, there was this little story about these three astronauts who travelled for 500 years in a sub-lightspeed ship. They arrived at an inhabited star system - which had been populated by humans departed from Earth a little after them, but on faster-than-light vessels. All was well, except for one detail. Human metabolism had changed, and the three travellers now stank abominably to the evolved humans. (In the story, they made it back to our time thanks to some worm-hole handwaving.)