Sydney: Swiss tennis star Martina Hingis, the former world no.1, was on fire in the US Open doubles match along with her Italian partner Flavia Pennetta when she reportedly smelt something odd.

Hingis and her doubles partner Pennetta were playing against Australia's Jarmila Gajdosova and Ajla Tomljanovic at the time. And as the five-time Grand Slam winner made her way towards the umpire's chair for change of ends, she waved her hands in front of her face and informed the chair-umpire on the micro-phone that, "Somebody's smoking some overwhelming s**t."