The NFL has banned the use of smelling salts during games, citing an FDA warning concerning the safety of the substance. Here's what experts say about the effects and the risks.

It started on Tuesday, with San Francisco 49ers’ star TE George Kittle breaking the news on the ban to NFL Network’s Mike Garafolo.

In a surprising move, the NFL has banned smelling salts, a decision revealed by San Francisco 49ers' George Kittle. Kittle, who used them frequently during games, expressed his disappointment. The ban follows FDA warnings about potential health risks and concerns that smelling salts could mask concussion symptoms.