Others were a haze, or strong acidic, sulphur or 'rotten egg' smells.

Once you get used to the rotten egg smell you can be in this warm bath for hours.

That's a rotten egg for you.

At its most effective it also carried the bouquet of vomit, goat and rotten egg.

Some microorganisms use hydrogen sulfide (rotten egg smell), which rises from deep within the earth, as an energy source.