How smelling salts have been used in the NFL, including after head injuries – New York Daily News

NFL's handling of concussions questioned after Tua's injury

The Nose Knows: A Look at Smelling Salts in Sports

The Nose Knows: A Look at Smelling Salts in Sports

Why It's Getting Harder to Watch the NFL -- New York Magazine - Nymag

Why Football Must Get Safer - The Atlantic

Craze for huffing smelling salts sweeps NFL sidelines

N.F.L.'s Concussion Protocol Under Scrutiny After Tagovailoa Injuries - The New York Times

The Ghosts of the NFL

T.J. Watt Claps Back at Concussion Backlash, Steelers Receive Alex Highsmith Update

Smelling salts a pregame jolt for NHL players, coaches - Sports Illustrated