If you live in Johannesburg, you may have caught a whiff of a peculiar smell wafting through the air.
Professor Rebecca Garland, an atmospheric scientist at the University of Pretoria, explained that it is likely caused by hydrogen sulphide, a gas often associated with rotten eggs.
“It comes from many different sources, some of them could be more local, but also there are industries, open mines, coal-fired plants, and sewage treatment plants.”
She highlighted that while the smell isn’t a health concern, the city’s air quality has been a concern, especially in winter, and more action is needed.
