The NFL released a memo with the rule change on ammonia inhalants on Aug. 5. See how 49ers tight end George Kittle and others ...

#49ers George Kittle just crashed our set to break news that the NFL banned smelling salts and ammonia packets today. Says he ...

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