Canadian curling teams are facing accusations of 'double touching' the stone at the Winter Olympics, sparking controversy and heightened scrutiny.Both the Canadian men's and women's teams have been accused of this violation, which occurs when the stone is touched again after its initial release down the ice. A Swedish curler accused Canadian Marc Kennedy of this on Friday, leading to a heated exchange where Kennedy denied the accusation and cursed at the Swedish player. Despite the incident, Canada won the match 8-6.On Saturday, Canadian skip Rachel Homan was accused of double-touching during a match against Switzerland. The play was stopped, and the stone was removed, resulting in Canada losing to Switzerland by one point. Pictures from these events have spread across social media, with fans expressing surprise that cheating could occur in curling, a sport where Canada is traditionally dominant.Umpires were placed at the hogline to monitor deliveries for three ends, following protocol after such complaints, and no violations or retouches were observed during this period. Kennedy was warned after the match that the language he used would not be tolerated, and if it happened again, there would be sanctions.The World Curling Federation has made it clear that double-touching the stone is not allowed, and anyone who does it will face consequences. The distraction may be affecting the Canadian teams, as the Canadian men lost to Switzerland, a team they were expected to beat.