Erotic asphyxiation is nothing new. Mention the term to anyone over the age of 30 and they’re likely to bring up Michael Hutchence’s 1997 death (which was ultimately determined to be a suicide) or Tim Winton’s 2008 novel Breath, which depicts a teenage boy getting drawn into sexual asphyxiation with an older friend’s wife. Various types of “breath play”, as it’s often referred to in BDSM communities, have been practised since at least the 1700s – it even appears in the Marquis de Sade’s 1791 novel Justine.

But historically representations of sexual strangulation have typically involved doing it to oneself, and erotic asphyxiation has been an uncommon act even in the BDSM communities with which it’s commonly associated.

In July researchers from Melbourne and Queensland universities published a study on the prevalence of sexual strangulation among 18- to 35-year-olds in Australia and found that over half of the more than 4,700 surveyed had choked or been choked by a sexual partner. Among young people, sexual choking has become mainstream.