In the scale of weird questions we get asked about Scottish salmon farming this has to be among the strangest.
On researching the origin of the question we discovered that the claim is being used by a small number of fringe activists who appear intent on spreading misinformation about our sector.
But, to the question itself - salmon, wild or farmed, can be infected by a chlamydia-like bacterial organism, Piscichlamydia. Veterinary research initially suggested that it may be a cause of gill cysts but that is now thought to be unlikely.
Rather, it appears to be mainly a secondary invader of gills damaged by other natural causes, e.g. plankton blooms. It is however uncommon and not considered a major issue with regards to fish health and welfare.
Like other infectious organisms of fish such as salmon, it cannot infect humans.
So to reassure concerned readers of a certain tabloid newspaper (which has since amended its grossly misleading headline), no matter what their interaction with Scottish salmon, they will not catch chlamydia.