This City News Toronto segment claims that many ice hockey players have been sniffing smelling salts (based on ammonia carbonate) for a supposed performance boost. (They go on to quote an expert explaining there is no evidence for the boost.)
Now, you may have seen many Leaf players using smelling salts to try and give themselves a bit of a boost on the bench. It is something even the younger players are now embracing.
Is this a widespread practice as claimed? Is it some some type of a joke or hoax?